Are you facing this issue in all the application or some of the applications??
Strange I do have the same Patch May 2023 its works fine in my server.
Still I recommend you to raise a ticket to qlik support may be they could help you with the same & if I do find a solution ill intimate on the same thread.
One of the solutions in my mind is a little drastic & might not get approved but still the steps are listed below,
- Take a backup on qlik sense QSR DB
- UnInstall patch 4
- Try to run Qlik sense it could work
- If it didn't work I recommend reinstalling qlik sense fresh with patch installed
- apply the license & try to create a application
- check of load script is running & run a demo script
- if all is good, then restore the backup
- Now it should work
