I know this will occur when it is checking an empty string, I have also searched in the community. But the problem is, I let the app to check whether if it is a list, which I am sure it is a list instead of an empty string.
Reproduce: Use these blocks. the first time you open the project it won’t happen, but if you exit when you didn’t store anything in the TinyDB, and open again, the runtime error would occur.
This is my block.
Guys, I realized what’s happened. In the app, when you head back to screen1 it will save the current process, but there is something wrong with it. When it reads back the data from tinyDB, it shows error because the value isn’t a list.