So you are saying that when you reboot your RPi, the very first line from 
WeeWX in syslog is:

Aug 19 21:40:09 raspberrypi weewx[769]: engine: retrying...

Gary

On Monday, 20 August 2018 15:24:22 UTC+10, Charlie Huang wrote:
>
> Hi,
>
> I already checked the log in a txt editor. There is nothing between:
>
> Aug 19 21:39:09 raspberrypi CRON[1360]: (root) CMD ( [ -x 
>> /usr/lib/php/sessionclean ] && if [ ! -d /run/systemd/system ]; then 
>> /usr/lib/php/sessionclean; fi)
>>
> and 
>
>> Aug 19 21:40:09 raspberrypi weewx[769]: engine: retrying...
>
>
> weewx startup lines only shows up when I run sudo weewxd weewx.conf. which 
> is really weird.
>
>
> On Monday, August 20, 2018 at 1:11:51 PM UTC+8, gjr80 wrote:
>>
>> Ok, that is very interesting but you did not do either of the two things 
>> I asked. Issuing the tail command that you used once your Rpi has booted 
>> means that you are only seeing the log from that point on; you miss all of 
>> the RPi boot sequence as well as the WeeWX startup and in this case the 
>> error that is causing WeeWX to restart. To post this part of the log I 
>> suggest you open /var/log/syslog in a text editor and locate the WeeWX 
>> startup that occurred as part of the latest reboot. The WeeWX startup 
>> starts with lines similar to the following:
>>
>> ...
>> Aug 5 15:51:45 stretch17 weewx[10604]: engine: Initializing weewx 
>> version 3.8.0
>> Aug 5 15:51:45 stretch17 weewx[10604]: engine: Using Python 2.7.13 (
>> default, Nov 24 2017, 17:33:09) #012[GCC 6.3.0 20170516]
>> Aug 5 15:51:45 stretch17 weewx[10604]: engine: Platform Linux-4.9.0-7-
>> amd64-x86_64-with-debian-9.5
>> Aug 5 15:51:45 stretch17 weewx[10604]: engine: Locale is 'en_AU.UTF-8'
>> Aug 5 15:51:45 stretch17 weewx[10604]: engine: pid file is /var/run/weewx
>> .pid
>> Aug 5 15:51:45 stretch17 weewx[10594]: Starting weewx weather system: 
>> weewx.
>> ...
>>
>> Once you have found these lines you need to copy and post the log from 
>> the WeeWX startup through to the error. It is important to provide the 
>> WeeWX startup as it gives a lot of information about what is loaded and 
>> from where.
>>
>> Don't worry about the output from sudo weewxd /etc/weewx/weewx.conf, we 
>> will come back to that later if need be.
>>
>> Gary
>>
>> On Monday, 20 August 2018 14:47:19 UTC+10, Charlie Huang wrote:
>>>
>>> here is the log every time i reboot my system.
>>>
>>> pi@raspberrypi:~ $ sudo tail -f /var/log/syslog
>>>> Aug 19 21:38:47 raspberrypi xrdp-sesman[1118]: (1118)(1995456512)[INFO 
>>>> ] starting xrdp-sessvc - xpid=1120 - wmpid=1119
>>>> Aug 19 21:38:48 raspberrypi xrdp[1108]: (1108)(1996423776)[INFO ] 
>>>> lib_mod_log_peer: xrdp_pid=1108 connected to X11rdp_pid=1120 
>>>> X11rdp_uid=1000 X11rdp_gid=1000 client_ip=::ffff:192.168.0.42 
>>>> client_port=60796
>>>> Aug 19 21:38:48 raspberrypi xrdp[1108]: (1108)(1996423776)[DEBUG] 
>>>> xrdp_wm_log_msg: connected ok
>>>> Aug 19 21:38:48 raspberrypi xrdp[1108]: (1108)(1996423776)[DEBUG] 
>>>> xrdp_mm_connect_chansrv: chansrv connect successful
>>>> Aug 19 21:38:48 raspberrypi xrdp[1108]: (1108)(1996423776)[DEBUG] 
>>>> Closed socket 16 (AF_INET6 ::1 port 34742)
>>>> Aug 19 21:38:48 raspberrypi xrdp[1108]: (1108)(1996423776)[INFO ] The 
>>>> following channel is allowed: rdpdr (0)
>>>> Aug 19 21:38:48 raspberrypi xrdp[1108]: (1108)(1996423776)[INFO ] The 
>>>> following channel is allowed: rdpsnd (1)
>>>> Aug 19 21:38:48 raspberrypi xrdp[1108]: (1108)(1996423776)[INFO ] The 
>>>> following channel is allowed: cliprdr (2)
>>>> Aug 19 21:38:48 raspberrypi xrdp[1108]: (1108)(1996423776)[INFO ] The 
>>>> following channel is allowed: drdynvc (3)
>>>> Aug 19 21:38:48 raspberrypi xrdp[1108]: (1108)(1996423776)[DEBUG] The 
>>>> allow channel list now initialized for this session
>>>> Aug 19 21:39:02 raspberrypi systemd[1]: Starting Clean php session 
>>>> files...
>>>> Aug 19 21:39:03 raspberrypi systemd[1]: Started Clean php session files.
>>>> Aug 19 21:39:09 raspberrypi CRON[1360]: (root) CMD (  [ -x 
>>>> /usr/lib/php/sessionclean ] && if [ ! -d /run/systemd/system ]; then 
>>>> /usr/lib/php/sessionclean; fi)
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> *Aug 19 21:40:09 raspberrypi weewx[769]: engine: retrying...Aug 19 
>>>> 21:40:09 raspberrypi weewx[769]: engine: Using configuration file 
>>>> /etc/weewx/weewx.confAug 19 21:40:09 raspberrypi weewx[769]: engine: Debug 
>>>> is 1Aug 19 21:40:09 raspberrypi weewx[769]: engine: Initializing engineAug 
>>>> 19 21:40:09 raspberrypi weewx[769]: engine: Loading station type 
>>>> Interceptor (user.interceptor)Aug 19 21:40:09 raspberrypi weewx[769]: 
>>>> interceptor: MainThread: driver version is 0.40Aug 19 21:40:09 raspberrypi 
>>>> weewx[769]: interceptor: MainThread: device type: lacrosse-bridgeAug 19 
>>>> 21:40:09 raspberrypi weewx[769]: interceptor: MainThread: sensor map: 
>>>> NoneAug 19 21:40:09 raspberrypi weewx[769]: interceptor: MainThread: using 
>>>> station serial 7FFF9EB20AEA91C1Aug 19 21:40:09 raspberrypi weewx[769]: 
>>>> interceptor: MainThread: using ping interval 120sAug 19 21:40:09 
>>>> raspberrypi weewx[769]: interceptor: MainThread: using sensor interval 
>>>> 1mAug 19 21:40:09 raspberrypi weewx[769]: import of driver failed: history 
>>>> interval must be 0-7 (<class 'weewx.ViolatedPrecondition'>)Aug 19 21:40:09 
>>>> raspberrypi weewx[769]: engine: Unable to load driver: history interval 
>>>> must be 0-7Aug 19 21:40:09 raspberrypi weewx[769]:     ****  Exiting...*
>>>
>>>
>>> Then I run "sudo weewxd weewx.conf", it actually starts to configure and 
>>> works perfectly.
>>>
>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Initializing weewx 
>>>> version 3.8.2
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Using Python 2.7.13 
>>>> (default, Nov 24 2017, 17:33:09) #012[GCC 6.3.0 20170516]
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Platform 
>>>> Linux-4.14.62-v7+-armv7l-with-debian-9.4
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Locale is 'en_US.UTF-8'
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Using configuration 
>>>> file /etc/weewx/weewx.conf
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Debug is 1
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Initializing engine
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading station type 
>>>> Interceptor (user.interceptor)
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: interceptor: MainThread: 
>>>> driver version is 0.40
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: interceptor: MainThread: 
>>>> device type: lacrosse-bridge
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: interceptor: MainThread: 
>>>> sensor map: None
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: interceptor: MainThread: using 
>>>> station serial 7FFFXXXXXXXXXXXX
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: interceptor: MainThread: using 
>>>> ping interval 120s
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: interceptor: MainThread: using 
>>>> sensor interval 1m
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: interceptor: MainThread: using 
>>>> history interval 3 (15m)
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: interceptor: MainThread: mode 
>>>> is listen
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: interceptor: MainThread: 
>>>> listen on :1010
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: interceptor: ServerThread: 
>>>> start tcp server
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.engine.StdTimeSynch
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.engine.StdTimeSynch
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.engine.StdConvert
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: StdConvert target unit 
>>>> is 0x1
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.engine.StdConvert
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.engine.StdCalibrate
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.engine.StdCalibrate
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.engine.StdQC
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.engine.StdQC
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.wxservices.StdWXCalculate
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: wxcalculate: The following 
>>>> values will be calculated: barometer=prefer_hardware, 
>>>> windchill=prefer_hardware, dewpoint=prefer_hardware, 
>>>> appTemp=prefer_hardware, rainRate=prefer_hardware, 
>>>> windrun=prefer_hardware, 
>>>> heatindex=prefer_hardware, maxSolarRad=prefer_hardware, 
>>>> humidex=prefer_hardware, pressure=prefer_hardware, 
>>>> inDewpoint=prefer_hardware, ET=prefer_hardware, altimeter=prefer_hardware, 
>>>> cloudbase=prefer_hardware
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: wxcalculate: The following 
>>>> algorithms will be used for calculations: altimeter=aaNOAA, maxSolarRad=RS
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.wxservices.StdWXCalculate
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> user.crt.CumulusRealTime
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: crt: service version is 0.18
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: crt: output goes to 
>>>> /var/tmp/realtime.txt
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: crt: 'None' values will be 
>>>> displayed as NULL
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: crt: units will be displayed 
>>>> as METRIC
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: crt: zambretti forecast: False
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: crt: binding is loop
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service user.crt.CumulusRealTime
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.engine.StdArchive
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Archive will use data 
>>>> binding wx_binding
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Record generation will 
>>>> be attempted in 'hardware'
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Using archive interval 
>>>> of 300 seconds (specified in weewx configuration)
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Use LOOP data in 
>>>> hi/low calculations: 1
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: manager: Daily summary version 
>>>> is 2.0
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Using binding 
>>>> 'wx_binding' to database 'weewx'
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: manager: Starting backfill of 
>>>> daily summaries
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.engine.StdArchive
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.restx.StdStationRegistry
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: restx: StationRegistry: 
>>>> Registration not requested.
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.restx.StdStationRegistry
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.restx.StdWunderground
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: restx: Wunderground-PWS: Data 
>>>> for station KCASANDI4566 will be posted
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.restx.StdWunderground
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.restx.StdPWSweather
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: restx: PWSweather: Posting not 
>>>> enabled.
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.restx.StdPWSweather
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.restx.StdCWOP
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: restx: CWOP: Posting not 
>>>> enabled.
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.restx.StdCWOP
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.restx.StdWOW
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: restx: WOW: Posting not 
>>>> enabled.
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.restx.StdWOW
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.restx.StdAWEKAS
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: restx: AWEKAS: Posting not 
>>>> enabled.
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.restx.StdAWEKAS
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.engine.StdPrint
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.engine.StdPrint
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Loading service 
>>>> weewx.engine.StdReport
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Finished loading 
>>>> service weewx.engine.StdReport
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Starting up weewx 
>>>> version 3.8.2
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Station does not 
>>>> support reading the time
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: engine: Starting main packet 
>>>> loop.
>>>> Aug 19 21:43:20 raspberrypi weewx[1517]: manager: Daily summary version 
>>>> is 2.0
>>>> Aug 19 21:43:30 raspberrypi weewx[1517]: interceptor: MainThread: empty 
>>>> queue
>>>> Aug 19 21:43:40 raspberrypi weewx[1517]: interceptor: MainThread: empty 
>>>> queue
>>>> Aug 19 21:43:50 raspberrypi weewx[1517]: interceptor: MainThread: empty 
>>>> queue
>>>> Aug 19 21:43:56 raspberrypi weewx[1517]: interceptor: ServerThread: 
>>>> recv: 01:01 80097CA2 FE4EF4CEC46520EE 01 64 20 20 01 61 13 01 35 31 61 13 
>>>> 01 71 79 99 00 00 40 06 81 00 01 80 70 71 40 61 60 20 20 71 68 18 00 41 50 
>>>> 06 28 00 91 80 70 71 40 61 80 22 00 11 38 18 00 37 70 06 28 00 17 01 21 07 
>>>> 31 16 11 30 13 58 82 02 59 17 02 15 08 30 17 12 07 14 35 92 01 72 00 00 00 
>>>> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 51 17 02 27 23 59 00 
>>>> 79 72 00 00 00 18 04 10 18 59 00 25 02 00 00 00 00 00 00 00 00 a1 27 60 68 
>>>> 13 01 01 00 00 00 00 00 00 24 00 50 bb bb bb 18 01 28 09 48 1c 68 00 00 d8 
>>>> 00 10 bb bb bb 02 96 81 00 51 02 46 90 83 64 03 22 81 09 34 16 11 30 15 45 
>>>> 16 11 30 13 40 03 53 03 9f d3
>>>> Aug 19 21:43:56 raspberrypi weewx[1517]: interceptor: ServerThread: 
>>>> send: 00:00
>>>> Aug 19 21:43:56 raspberrypi weewx[1517]: interceptor: MainThread: raw 
>>>> data: {'mac': '80097CA2', 'data': 
>>>> '01642020016113013531611301717999000040068100018070714061602020716818004150062800918070714061802200113818003770062800170121073116113013588202591702150830171207143592017200000000000000000000000000000000000000000051170227235900797200000018041018590025020000000000000000a1276068130101000000000000240050bbbbbb18012809481c680000d80010bbbbbb029681005102469083640322810934161130154516113013400353039fd3'}
>>>> Aug 19 21:43:56 raspberrypi weewx[1517]: interceptor: MainThread: 
>>>> skipping rain measurement of 127.6068: no last rain
>>>> Aug 19 21:43:56 raspberrypi weewx[1517]: interceptor: MainThread: raw 
>>>> packet: {'gust_dir..80097CA2': 247.5, 'humidity_out..80097CA2': 72, 
>>>> 'humidity_in..80097CA2': 59, 'record_type..80097CA2': '01', 
>>>> 'gust_speed..80097CA2': 2.16, 'forecast..80097CA2': '20', 
>>>> 'rain_total..80097CA2': 127.60679999999999, 'rain..80097CA2': None, 
>>>> 'dateTime': 1534740236, 'wind_speed..80097CA2': 0.36, 'usUnits': 16, 
>>>> 'wind_dir..80097CA2': 247.5, 'rf_signal_strength..80097CA2': 100, 
>>>> 'temperature_out..80097CA2': 22.799999999999997, 'status..80097CA2': '20', 
>>>> 'barometer..80097CA2': 1005.1, 'temperature_in..80097CA2': 
>>>> 28.099999999999994, 'windchill..80097CA2': 22.799999999999997}
>>>> Aug 19 21:43:56 raspberrypi weewx[1517]: interceptor: MainThread: 
>>>> mapped packet: {'barometer': 1005.1, 'outHumidity': 72, 'windGust': 2.16, 
>>>> 'rain': None, 'dateTime': 1534740236, 'windDir': 247.5, 'outTemp': 
>>>> 22.799999999999997, 'windSpeed': 0.36, 'inHumidity': 59, 'inTemp': 
>>>> 28.099999999999994, 'rxCheckPercent': 100, 'usUnits': 16, 'windGustDir': 
>>>> 247.5}
>>>
>>>
>>> That's the end of first data grabbing.
>>>
>>> On Monday, August 20, 2018 at 12:29:45 PM UTC+8, gjr80 wrote:
>>>>
>>>> Hi,
>>>>
>>>> So what happens when you run WeeWX manually and provide the fill path 
>>>> to weewx.conf, ie
>>>>
>>>> $ sudo weewxd /etc/weewx/weewx.conf
>>>>
>>>> Does WeeWX start without error? What does the log say? Also, the log 
>>>> extract you provided does not appear to be complete, the first line 
>>>> indicates that WeeWX is trying to load again which implies it was already 
>>>> running. Can you please provide the log from when WeeWX starts through 
>>>> until the error. Best to provide too much rather than too little log.
>>>>
>>>> Gary
>>>>
>>>>
>>>> On Monday, 20 August 2018 14:04:38 UTC+10, Charlie Huang wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> My weewx service won't start each time I reboot. this is my log file.
>>>>>
>>>>> Aug 19 20:54:27 raspberrypi weewx[763]: engine: retrying...
>>>>>> Aug 19 20:54:27 raspberrypi weewx[763]: engine: Using configuration 
>>>>>> file /etc/weewx/weewx.conf
>>>>>> Aug 19 20:54:27 raspberrypi weewx[763]: engine: Debug is 1
>>>>>> Aug 19 20:54:27 raspberrypi weewx[763]: engine: Initializing engine
>>>>>> Aug 19 20:54:27 raspberrypi weewx[763]: engine: Loading station type 
>>>>>> Interceptor (user.interceptor)
>>>>>> Aug 19 20:54:27 raspberrypi weewx[763]: interceptor: MainThread: 
>>>>>> driver version is 0.40
>>>>>> Aug 19 20:54:27 raspberrypi weewx[763]: interceptor: MainThread: 
>>>>>> device type: lacrosse-bridge
>>>>>> Aug 19 20:54:27 raspberrypi weewx[763]: interceptor: MainThread: 
>>>>>> sensor map: None
>>>>>> Aug 19 20:54:27 raspberrypi weewx[763]: interceptor: MainThread: 
>>>>>> using station serial 7FFFXXXXXXXXXXXX
>>>>>> Aug 19 20:54:27 raspberrypi weewx[763]: interceptor: MainThread: 
>>>>>> using ping interval 120s
>>>>>> Aug 19 20:54:27 raspberrypi weewx[763]: interceptor: MainThread: 
>>>>>> using sensor interval 1m
>>>>>> Aug 19 20:54:27 raspberrypi weewx[763]: import of driver failed: 
>>>>>> history interval must be 0-7 (<class 'weewx.ViolatedPrecondition'>)
>>>>>> Aug 19 20:54:27 raspberrypi weewx[763]: engine: Unable to load 
>>>>>> driver: history interval must be 0-7
>>>>>> Aug 19 20:54:27 raspberrypi weewx[763]:     ****  Exiting...
>>>>>>
>>>>>
>>>>> Yep it gives me error says my history interval must be 0-7. However 
>>>>> when I check my weewx.conf file, the value by default is 3 which I did 
>>>>> not 
>>>>> change.
>>>>>
>>>>> [Interceptor]
>>>>>>     # This section is for the network traffic interceptor driver.
>>>>>>     # The driver to use:
>>>>>>     driver = user.interceptor
>>>>>>     # Specify the hardware device to capture.  Options include:
>>>>>>     #   acurite-bridge - acurite internet bridge
>>>>>>     #   observer - fine offset WH2600/HP1000/HP1003, aka 'observer'
>>>>>>     #   lw30x - oregon scientific LW301/LW302
>>>>>>     #   lacrosse-bridge - lacrosse GW1000U/C84612 internet bridge
>>>>>>     device_type = lacrosse-bridge
>>>>>>     serial = 7FFF9EB20AEA91C1
>>>>>>     sensor_interval = 1
>>>>>>     history_interval = 3
>>>>>>     ping_interval = 120
>>>>>>
>>>>>
>>>>> HOWEVER, when I manually run "sudo weewxd weewx.conf", it will start 
>>>>> running...
>>>>> I just wonder why it won't start automatically each time I reboot. 
>>>>> Usually it will.
>>>>>
>>>>> By the way I just add weather34 service and its data add-on today.
>>>>>
>>>>

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