I am working on a project, I do not know what I did or if I did something but now I cannot use  the undo or redo command.Also when I want to use commands like offset, mirror, I use the command and then I need to draw another line in order for the previous command to work.

I also got a error saying automatic solving is not turned on, I turned it on but it didn't help.

If I try to use the same commands on another drawing they work