I was using the Traccar server for few months with not a issue! I upgraded from 5.2 to 5.4 after the release with no problems! Was working for few weeks with no problem!
Then I decide to learn a bit more and start using new futures - try to send mail and Telegram messages:
First I have configured server to send email with Gmail smtp when my Device moving, Geofence entered and Geofence exited.
Then I saw that there is a Calendar drop down menu with name of a calendar I have added few days before and decide to "use it".
Saved and went called it for the night. Next morning server was giving the error I have posted as text and all 3 devices were offline. Searched the error and saw this forum post, saw that my issue is identical to the OP and decide to remove the calendar, restarted the service and voila - my server stopped giving errors and devices came back online. When I decide to recreate the error i got the message from the screenshots. Thats all :)
I was using the Traccar server for few months with not a issue! I upgraded from 5.2 to 5.4 after the release with no problems! Was working for few weeks with no problem!
Then I decide to learn a bit more and start using new futures - try to send mail and Telegram messages:
First I have configured server to send email with Gmail smtp when my Device moving, Geofence entered and Geofence exited.
Then I saw that there is a Calendar drop down menu with name of a calendar I have added few days before and decide to "use it".
Saved and went called it for the night. Next morning server was giving the error I have posted as text and all 3 devices were offline. Searched the error and saw this forum post, saw that my issue is identical to the OP and decide to remove the calendar, restarted the service and voila - my server stopped giving errors and devices came back online. When I decide to recreate the error i got the message from the screenshots. Thats all :)