When you get error while flashing magisk simply just reboot to recovery(not system) and try again.when I follow the next steps:
- copy magiskfix_v1_realme_wzsx150.zip(from my OneDrive) and magisk***.zip to your phones internal storage,
- boot to TWRP,
- flash magisk,
- flash magiskfix_v1_realme_wzsx150.zip,
- reboot to OS.
I can't install the magisk because I get an error and it doesn't let me install it.
I restart the phone and it is reset to twrp.