First of all. Congratulations on developing this system. I've been using it for a few years now. To improve user performance I moved ProjeQtOr to a new server.

I performed the mysql backup and restore procedures and everything worked perfectly, except for the attachments.

I copied the "files" directory from the old server to the new server and ensured the access permissions were correct.

I analyzed the log and there is something with separator.

2022-08-10 09:09:37.552 ** ERROR ** [V10.0.3] ERROR **
2022-08-10 09:09:37.552 ** ERROR ** [V10.0.3] on file '/var/www/projeqtor/report/attachment.php' at line (125)
2022-08-10 09:09:37.552 ** ERROR ***** [V10.0.3] cause = implode(): Passing null to parameter #1 ($separator) of type array|string is deprecated

My knowledge of PHP is almost nil. I would like to be able to solve this problem and at the same time contribute to the improvement of ProjeQtOr. What can I do ?