I tried to update from version 5.1.1 to the current version 5.5.2.
After installation, I copied the old configuration from the backup to the new installation. I can start everything up and the webserver is running. I can log in and load the table view, however it is impossible to show a scheme. The scheme window remains empty, and there are no errors displayed and no errors in the log files. However, there are errors in the konsole view of the browser:
Any Ideas what could cuase that problems?
I already tried with a newly created scheme, but the problem remains.