Are you using Internet Explorer by any chance?
Yes Internet Explorer 11. Just tried it in Firefox and it works.
It's already fixed for Internet Explorer on GitHub. The fix will be included in the next release.
hello Anton, what will happend with traccar on the year 2038-01-19 03:14:07 because timestamp just can reach this range
On the webpage the timestamp is missing. Both in last position, and in the history. Only a blank field. In the MYSQL database the time is okay. (Version 3.4 upgraded from 3.3)