Hi everyone,

   I just wanted to ask how to solve this error. I'm currently learning mold-making and I made a phone case to try the side core feature out. When I tried to use the tooling split feature but it gave me the error "Rebuild Error: Cannot Knit Sheets Together". After have several failed attempts at fixing it and many google searches I was still not be able to solve this problem. The file is attached below if you want to check it out.