What version of Traccar are you using?
Version 6.1 will be deployed on ubuntu server.
Official release without any code modifications?
Yes, the official one without any changes.
However, we have updated from version 4.15 - the official version
Just tested and it works for me.
Indeed, it seems that the problem is in the database, after updating the version.
I deployed a clean copy on a virtual server - and the export was successful.
It turns out that the database from version 4.15 of MySQL has differences 6.1
Sounds like you just had an old backend. It has nothing to do with the database.
That's right, the old server was on 4.15, and we updated it to 6.1 - everything works, there was no export to 4.15 yet, but we were very happy about the appearance of one until we found out that it didn't work out :)
When exporting devices (settings - devices - export)
Returns the error /api/reports/devices/xlsx may be temporarily unavailable or moved to a new address.
ERR_INVALID_RESPONSE
The rest of the reports in xsl work - tell me where to look