Hello Sylwat,
I have done some tests with different browsers (Chrome and Firefox) on two slightly different QueueMetrics configurations.
I was not able to replicate the issue.
It might be that the connectivity drops during the night. Maybe a database backup locks the tables and QueueMetrics is not able to access the data, causing it to return an error.
Would you mind sending me the complete log files (the most recent ones):
/var/log/asterisk/queue_log
At support@loway.ch
Please use a hosting platform if the files are larger than 10mb.
Best Regards,
Iacob