Why does the game crash from canvas?

Question

Unity

When I move from the menu scene to the game scene, it crashes, but if I disable canvases on a certain object, everything works fine. I also have a script in my project that should disable or enable Canvas data, and so, if I disable them, then the game works every other time. Cause writes in the logs: null pointer dereference tried all the methods suggested on the Internet, did not help. Why is this happening and how to fix it?