I send attached the log file. Hope this is what you need. Many thanks for your help!It is just a guessing game without LOG files.
Your Magisk install could have become borked or something is interfering with Magisk.
One of your other modifications.?
This would include a change in (or made by) the custom rom.
Did you change any setting or update anything in your rom?
Log(s) are the only way to know what is actually happening.
Magisk and MagiskHide Installation and Troubleshooting guide - WebSite - Asking for help/reporting bugs - Link
The more information we have, the more we can help.