this shouldn’t happen under any circumstance, of course, but also I have not yet seen anything like this. Do you have any packages installed? (And which otobo version are you on? Also are you using docker, or not?)
Else please try to describe all steps you have taken, that we can reproduce this. It is definitely not happening with the standard installation and configuration.
sorry, but you have to provide more details about the error. On none of the systems I know this has occurred, so I cannot tell you anything by just seeing the picture. You have to either provide some way for me to reproduce this (try a fresh install without any changes and see if it occurs, and then configure your system step by step, until it does), or you have to show me some error messages. As I said, please look at your browser console, which I guess would be a likely candidate. Also helpful could be /var/log/apache2/error.log, and (not so likely) /var/log/syslog.
Do you have any code changes in the Custom folder? (Or did you change anything yourself after the migration?)
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