I am running Weewx 5.1 on an rpi 4 with a BYOWS driver. It crashes several 
times a day at random times (weewx process stops somehow), below is the log 
file of a time where it crashes. I have created a crontab task that starts 
Weewx every hour (in case it has crashed and starts again) and that works, 
but then gaps appear, I can create that task every 5 minutes, but would 
rather get rid of the source of the problems and I can't figure out what is 
not going right now. Can anyone help me?

Log:
Sep 22 11:11:32 byows-jim weewxd[71261]: INFO weewx.engine: Main loop 
exiting. Shutting engine down.
Sep 22 11:11:32 byows-jim weewxd[71261]: INFO weewx.engine: Shutting down 
StdReport thread
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__: Caught 
unrecoverable exception:
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****  list 
index out of range
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     **** 
 Traceback (most recent call last):
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****   
 File "/usr/share/weewx/weewxd.py", line 127, in main
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****     
 engine.run()
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****   
 File "/usr/share/weewx/weewx/engine.py", line 204, in run
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****     
 for packet in self.console.genLoopPackets():
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****   
 File "/etc/weewx/bin/user/byows_rpi.py", line 83, in genLoopPackets
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****     
 data = self.station.get_data()
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****       
      ^^^^^^^^^^^^^^^^^^^^^^^
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****   
 File "/etc/weewx/bin/user/byows_rpi.py", line 147, in get_data
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****     
 data["soilTemp1"] = self.get_soil_temp()
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****       
                   ^^^^^^^^^^^^^^^^^^^^
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****   
 File "/etc/weewx/bin/user/byows_rpi.py", line 129, in get_soil_temp
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****     
 return self.temp_probe.read_temp()
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****       
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****   
 File "/etc/weewx/bin/user/byows_rpi.py", line 189, in read_temp
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****     
 success = self.crc_check(lines)
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****       
         ^^^^^^^^^^^^^^^^^^^^^
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****   
 File "/etc/weewx/bin/user/byows_rpi.py", line 180, in crc_check
Sep 22 11:11:32 byows-jim weewxd[71261]: Traceback (most recent call last):
Sep 22 11:11:32 byows-jim weewxd[71261]:   File 
"/usr/share/weewx/weewxd.py", line 226, in <module>
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****     
 return lines[0].strip()[-3:] == "YES"
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     ****       
      ~~~~~^^^
Sep 22 11:11:32 byows-jim weewxd[71261]:     main()
Sep 22 11:11:32 byows-jim weewxd[71261]:   File 
"/usr/share/weewx/weewxd.py", line 127, in main
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     **** 
 IndexError: list index out of range
Sep 22 11:11:32 byows-jim weewxd[71261]:     engine.run()
Sep 22 11:11:32 byows-jim weewxd[71261]:   File 
"/usr/share/weewx/weewx/engine.py", line 204, in run
Sep 22 11:11:32 byows-jim weewxd[71261]:     for packet in 
self.console.genLoopPackets():
Sep 22 11:11:32 byows-jim weewxd[71261]:   File 
"/etc/weewx/bin/user/byows_rpi.py", line 83, in genLoopPackets
Sep 22 11:11:32 byows-jim weewxd[71261]: CRITICAL __main__:     **** 
 Exiting.
Sep 22 11:11:32 byows-jim weewxd[71261]:     data = self.station.get_data()
Sep 22 11:11:32 byows-jim weewxd[71261]:            ^^^^^^^^^^^^^^^^^^^^^^^
Sep 22 11:11:32 byows-jim weewxd[71261]:   File 
"/etc/weewx/bin/user/byows_rpi.py", line 147, in get_data
Sep 22 11:11:32 byows-jim weewxd[71261]:     data["soilTemp1"] = 
self.get_soil_temp()
Sep 22 11:11:32 byows-jim weewxd[71261]:                         
^^^^^^^^^^^^^^^^^^^^
Sep 22 11:11:32 byows-jim weewxd[71261]:   File 
"/etc/weewx/bin/user/byows_rpi.py", line 129, in get_soil_temp
Sep 22 11:11:32 byows-jim weewxd[71261]:     return 
self.temp_probe.read_temp()
Sep 22 11:11:32 byows-jim weewxd[71261]:           
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 22 11:11:32 byows-jim weewxd[71261]:   File 
"/etc/weewx/bin/user/byows_rpi.py", line 189, in read_temp
Sep 22 11:11:32 byows-jim weewxd[71261]:     success = self.crc_check(lines)
Sep 22 11:11:32 byows-jim weewxd[71261]:               ^^^^^^^^^^^^^^^^^^^^^
Sep 22 11:11:32 byows-jim weewxd[71261]:   File 
"/etc/weewx/bin/user/byows_rpi.py", line 180, in crc_check
Sep 22 11:11:32 byows-jim weewxd[71261]:     return lines[0].strip()[-3:] 
== "YES"
Sep 22 11:11:32 byows-jim weewxd[71261]:            ~~~~~^^^
Sep 22 11:11:32 byows-jim weewxd[71261]: IndexError: list index out of range
Sep 22 11:11:32 byows-jim systemd[1]: weewx.service: Main process exited, 
code=exited, status=1/FAILURE
Sep 22 11:11:32 byows-jim systemd[1]: weewx.service: Failed with result 
'exit-code'.
Sep 22 11:11:32 byows-jim systemd[1]: weewx.service: Consumed 5min 32.737s 
CPU time.'

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