Reason: "upon completion of tutorial (beating tut boss and unlocking menu not icons at the side.) an error popup occurs when trying to open the menu causing crash.".
Checked by myself
When you killed the tutorial boss and you're back in your room in the castle and you try to access the menu on the right side, it'll crash the game because of missing assets.
Proof:
Emulator, LDPlayer 9 Version 9.1.48.0(64), Android 9.0, rooted & patched with Magisk: