No submodule mapping found in .gitmodules for path and missing .gitmodules file

Question

When I run git submodule init, I get the following error:

No submodule mapping found in .gitmodules for path \'xxx\'

I

Answer 1

Adding to the answer by @kirelagin :

Not always you need to do git rm. Sometimes, it's merely a typo in your .gitmodules. Here I made a few snapshots and commentaries on how SourceTree Git might lose track of submodules.