Here is log file with DEBUG. Not much more information. Looks like timeout 
to station and then crash.

Dec 20 15:47:38 kurlingtim journal: weewx[1629] INFO __main__: Starting up 
weewx version 4.5.1
Dec 20 15:47:38 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Gentle wake up of console successful
Dec 20 15:47:39 kurlingtim journal: weewx[1629] INFO weewx.engine: Clock 
error is -1.37 seconds (positive is fast)
Dec 20 15:47:39 kurlingtim journal: weewx[1629] INFO weewx.engine: Using 
binding 'wx_binding' to database 'weewx.sdb'
Dec 20 15:47:39 kurlingtim journal: weewx[1629] INFO weewx.manager: 
Starting backfill of daily summaries
Dec 20 15:47:39 kurlingtim journal: weewx[1629] INFO weewx.manager: Daily 
summaries up to date
Dec 20 15:47:39 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Getting archive packets since 2021-12-20 15:45:00 
CET (1640011500)
Dec 20 15:47:39 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Gentle wake up of console successful
Dec 20 15:47:40 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Retrieving 0 page(s); starting index= 0
Dec 20 15:47:40 kurlingtim journal: weewx[1629] INFO weewx.engine: Starting 
main packet loop.
Dec 20 15:47:41 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Gentle wake up of console successful
Dec 20 15:47:41 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Requesting 200 LOOP packets.
Dec 20 15:47:42 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Gentle wake up of console successful
Dec 20 15:48:01 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: ip-read error: timed out
Dec 20 15:48:01 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: LOOP try #1; error: timed out
Dec 20 15:48:05 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: ip-read error: timed out
Dec 20 15:48:05 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: LOOP try #2; error: timed out
Dec 20 15:48:42 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: LOOP try #1; error: Expected 99 characters; got zero 
instead
Dec 20 15:48:42 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: LOOP try #2; error: Expected 99 characters; got zero 
instead
Dec 20 15:48:42 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: LOOP try #3; error: Expected 99 characters; got zero 
instead
Dec 20 15:48:42 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: LOOP try #4; error: Expected 99 characters; got zero 
instead
Dec 20 15:48:42 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: LOOP max tries (4) exceeded.
Dec 20 15:48:42 kurlingtim journal: weewx[1629] INFO weewx.engine: Main 
loop exiting. Shutting engine down.
Dec 20 15:48:42 kurlingtim journal: weewx[1629] CRITICAL __main__: Caught 
WeeWxIOError: Max tries exceeded while getting LOOP data.
Dec 20 15:48:42 kurlingtim journal: weewx[1629] CRITICAL __main__:     **** 
 Waiting 60 seconds then retrying...
Dec 20 15:49:42 kurlingtim journal: weewx[1629] INFO __main__: retrying...
Dec 20 15:49:42 kurlingtim journal: weewx[1629] INFO __main__: Using 
configuration file /etc/weewx/weewx.conf
Dec 20 15:49:42 kurlingtim journal: weewx[1629] INFO __main__: Debug is 1
Dec 20 15:49:42 kurlingtim journal: weewx[1629] DEBUG __main__: 
Initializing engine
Dec 20 15:49:42 kurlingtim journal: weewx[1629] INFO weewx.engine: Loading 
station type Vantage (weewx.drivers.vantage)
Dec 20 15:49:42 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Driver version is 3.2.2
Dec 20 15:49:42 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Option loop_request=1
Dec 20 15:49:42 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Opened up ethernet host home.kurlingtim.si on port 
22222. timeout=4.0, tcp_send_delay=0.5
Dec 20 15:49:47 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: ip-read error: timed out
Dec 20 15:49:47 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Retry #0 failed
Dec 20 15:49:52 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: ip-read error: timed out
Dec 20 15:49:52 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Retry #1 failed
Dec 20 15:49:58 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: ip-read error: timed out
Dec 20 15:49:58 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Retry #2 failed
Dec 20 15:50:04 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: ip-read error: timed out
Dec 20 15:50:04 kurlingtim journal: weewx[1629] DEBUG 
weewx.drivers.vantage: Retry #3 failed
Dec 20 15:50:05 kurlingtim journal: weewx[1629] ERROR 
weewx.drivers.vantage: Unable to wake up console
Dec 20 15:50:05 kurlingtim journal: weewx[1629] ERROR weewx.engine: Import 
of driver failed: Unable to wake up Vantage console (<class 
'weewx.WakeupError'>)
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****  Traceback (most recent call last):
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****    File "/usr/share/weewx/weewx/engine.py", line 119, in setupStation
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****      self.console = loader_function(config_dict, self)
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 39, in loader
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****      return VantageService(engine, config_dict)
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 1899, in 
__init__
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****      Vantage.__init__(self, **config_dict[DRIVER_NAME])
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 516, in 
__init__
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****      self._setup()
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 1318, in 
_setup
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****      self.port.wakeup_console(max_tries=self.max_tries)
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 119, in 
wakeup_console
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****      raise weewx.WakeupError("Unable to wake up Vantage console")
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL weewx.engine:     
****  WakeupError: Unable to wake up Vantage console
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL __main__: Unable 
to load driver: Unable to wake up Vantage console
Dec 20 15:50:05 kurlingtim journal: weewx[1629] CRITICAL __main__:     **** 
 Exiting...

On Monday, December 20, 2021 at 2:40:12 PM UTC+1 Sandi Mislej wrote:

> Hi
> I increased verbosity of system log (messages), I will post it with next 
> event.
> I am using third party Wifilogger (https://wifilogger.net/), which 
> emulates Davis IP ethernet module.Weewx has no problem connecting to it and 
> read data. 
>
>
> On Monday, December 20, 2021 at 2:13:33 PM UTC+1 [email protected] wrote:
>
>> 1. Thanks for including the log excerpt. Unfortunately, despite setting 
>> debug=1, it does not include DEBUG entries. Make sure you are using the 
>> right log. On CentOS, I believe this is /var/log/messages. Also, make sure 
>> the system logger is configured to log DEBUG messages.
>>
>> 2. Which logger do you have? Davis makes a USB logger and a serial 
>> logger. They used to make an "IP" ethernet logger. But, no Wifi logger.
>>
>> -tk
>>
>>
>>
>> On Mon, Dec 20, 2021 at 4:51 AM Sandi Mislej <[email protected]> wrote:
>>
>>> Hi!
>>>
>>> I have Davis Vantage Vue with Wifilogger.
>>> I am running Weewx on Centos 7.
>>> Refresh rate is set to 5 minutes. 
>>> Every few hours weewx crashes, log file is attached. Looks like it 
>>> cannot load hardware driver.
>>> Dec 20 12:54:26 kurlingtim journal: weewx[26525] INFO __main__: Using 
>>> configuration file /etc/weewx/weewx.conf
>>> Dec 20 12:54:26 kurlingtim journal: weewx[26525] INFO __main__: Debug is 
>>> 1
>>> Dec 20 12:54:26 kurlingtim journal: weewx[26525] INFO weewx.engine: 
>>> Loading station type Vantage (weewx.drivers.vantage)
>>> Dec 20 12:54:31 kurlingtim journal: weewx[26525] INFO weewx.engine: 
>>> StdConvert target unit is 0x1
>>> Dec 20 12:54:31 kurlingtim journal: weewx[26525] INFO weewx.engine: 
>>> Archive will use data binding wx_binding
>>> Dec 20 12:54:31 kurlingtim journal: weewx[26525] INFO weewx.engine: 
>>> Record generation will be attempted in 'hardware'
>>> Dec 20 12:54:31 kurlingtim journal: weewx[26525] INFO weewx.engine: 
>>> Using archive interval of 300 seconds (specified by hardware)
>>> Dec 20 12:54:31 kurlingtim journal: weewx[26525] INFO weewx.restx: 
>>> StationRegistry: Registration not requested.
>>> Dec 20 12:54:31 kurlingtim journal: weewx[26525] INFO weewx.restx: 
>>> Wunderground: Posting not enabled.
>>> Dec 20 12:54:31 kurlingtim journal: weewx[26525] INFO weewx.restx: 
>>> PWSweather: Posting not enabled.
>>> Dec 20 12:54:31 kurlingtim journal: weewx[26525] INFO weewx.restx: CWOP: 
>>> Posting not enabled.
>>> Dec 20 12:54:31 kurlingtim journal: weewx[26525] INFO weewx.restx: WOW: 
>>> Posting not enabled.
>>> Dec 20 12:54:31 kurlingtim journal: weewx[26525] INFO weewx.restx: 
>>> AWEKAS: Posting not enabled.
>>> Dec 20 12:54:31 kurlingtim journal: weewx[26525] INFO __main__: Starting 
>>> up weewx version 4.5.1
>>> Dec 20 12:54:32 kurlingtim journal: weewx[26525] INFO weewx.engine: 
>>> Clock error is -1.15 seconds (positive is fast)
>>> Dec 20 12:54:32 kurlingtim journal: weewx[26525] INFO weewx.engine: 
>>> Using binding 'wx_binding' to database 'weewx.sdb'
>>> Dec 20 12:54:32 kurlingtim journal: weewx[26525] INFO weewx.manager: 
>>> Starting backfill of daily summaries
>>> Dec 20 12:54:32 kurlingtim journal: weewx[26525] INFO weewx.manager: 
>>> Daily summaries up to date
>>> Dec 20 12:54:33 kurlingtim journal: weewx[26525] INFO weewx.engine: 
>>> Starting main packet loop.
>>> Dec 20 12:55:17 kurlingtim journal: weewx[26525] INFO weewx.manager: 
>>> Added record 2021-12-20 12:55:00 CET (1640001300) to database 'weewx.sdb'
>>> Dec 20 12:55:17 kurlingtim journal: weewx[26525] INFO weewx.manager: 
>>> Added record 2021-12-20 12:55:00 CET (1640001300) to daily summary in 
>>> 'weewx.sdb'
>>> Dec 20 12:55:17 kurlingtim journal: weewx[26525] INFO 
>>> weewx.cheetahgenerator: Generated 8 files for report SeasonsReport in 0.29 
>>> seconds
>>> Dec 20 12:55:17 kurlingtim journal: weewx[26525] INFO 
>>> weewx.imagegenerator: Generated 15 images for report SeasonsReport in 0.21 
>>> seconds
>>> Dec 20 12:55:17 kurlingtim journal: weewx[26525] INFO 
>>> weewx.reportengine: Copied 5 files to /var/www/html/weewx
>>> Dec 20 12:56:17 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: LOOP try #1; error: Expected 99 characters; got zero 
>>> instead
>>> Dec 20 12:56:17 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: LOOP try #2; error: Expected 99 characters; got zero 
>>> instead
>>> Dec 20 12:56:17 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: LOOP try #3; error: Expected 99 characters; got zero 
>>> instead
>>> Dec 20 12:56:17 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: LOOP try #4; error: Expected 99 characters; got zero 
>>> instead
>>> Dec 20 12:56:17 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: LOOP max tries (4) exceeded.
>>> Dec 20 12:56:17 kurlingtim journal: weewx[26525] INFO weewx.engine: Main 
>>> loop exiting. Shutting engine down.
>>> Dec 20 12:56:17 kurlingtim journal: weewx[26525] INFO weewx.engine: 
>>> Shutting down StdReport thread
>>> Dec 20 12:56:17 kurlingtim journal: weewx[26525] CRITICAL __main__: 
>>> Caught WeeWxIOError: Max tries exceeded while getting LOOP data.
>>> Dec 20 12:56:17 kurlingtim journal: weewx[26525] CRITICAL __main__:     
>>> ****  Waiting 60 seconds then retrying...
>>> Dec 20 12:57:17 kurlingtim journal: weewx[26525] INFO __main__: 
>>> retrying...
>>> Dec 20 12:57:17 kurlingtim journal: weewx[26525] INFO __main__: Using 
>>> configuration file /etc/weewx/weewx.conf
>>> Dec 20 12:57:17 kurlingtim journal: weewx[26525] INFO __main__: Debug is 
>>> 1
>>> Dec 20 12:57:17 kurlingtim journal: weewx[26525] INFO weewx.engine: 
>>> Loading station type Vantage (weewx.drivers.vantage)
>>> Dec 20 12:57:22 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: ip-read error: timed out
>>> Dec 20 12:57:28 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: ip-read error: timed out
>>> Dec 20 12:57:33 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: ip-read error: timed out
>>> Dec 20 12:57:35 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: No <ACK> received from console
>>> Dec 20 12:57:35 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: _determine_hardware; retry #0: 'No <ACK> received 
>>> from Vantage console'
>>> Dec 20 12:57:36 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: No <ACK> received from console
>>> Dec 20 12:57:36 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: _determine_hardware; retry #1: 'No <ACK> received 
>>> from Vantage console'
>>> Dec 20 12:57:36 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: No <ACK> received from console
>>> Dec 20 12:57:36 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: _determine_hardware; retry #2: 'No <ACK> received 
>>> from Vantage console'
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: No <ACK> received from console
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: _determine_hardware; retry #3: 'No <ACK> received 
>>> from Vantage console'
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] ERROR 
>>> weewx.drivers.vantage: Unable to read hardware type; raise WeeWxIOError
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] ERROR weewx.engine: 
>>> Import of driver failed: Unable to read hardware type (<class 
>>> 'weewx.WeeWxIOError'>)
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****  Traceback (most recent call last):
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****    File "/usr/share/weewx/weewx/engine.py", line 119, in 
>>> setupStation
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****      self.console = loader_function(config_dict, self)
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 39, in 
>>> loader
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****      return VantageService(engine, config_dict)
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 1899, in 
>>> __init__
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****      Vantage.__init__(self, **config_dict[DRIVER_NAME])
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 516, in 
>>> __init__
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****      self._setup()
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 1322, in 
>>> _setup
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****      self.hardware_type = self._determine_hardware()
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 1313, in 
>>> _determine_hardware
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****      raise weewx.WeeWxIOError("Unable to read hardware type")
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL weewx.engine: 
>>>     ****  WeeWxIOError: Unable to read hardware type
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL __main__: 
>>> Unable to load driver: Unable to read hardware type
>>> Dec 20 12:57:37 kurlingtim journal: weewx[26525] CRITICAL __main__:     
>>> ****  Exiting...
>>>
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>>>
>>

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