Hi after updating to concrete 5.6 I cannot edit or add any blocks, I have had a fatal error message a few times but mostly everything just appears blank when I try to edit.

I read a few posts from people who are having the same problem and a couple have solved the issue but I am a novice and know nothing about the general layout or coding of websites and cannot follow the solution given.

If anyone could give me a step by step of how to fix this issue in its simplest form that would be much appreciated

thank you