Encountered 7 file(s) that should have been pointers, but weren‘t

1、问题描述：
sourcetree的文件暂存并提交后，还是在暂存区。然后提示：
Encountered 7 file(s) that should have been pointers, but weren’t

2、解决办法：
git lfs uninstall
git reset --hard
git lfs install
git lfs pull
或者
git rm --cached -r .
git reset --hard
git rm .gitattributes
git reset .
git checkout .