Git cannot commit & sync. git:fatal: couldn't find remote ref first_feature

1. I tried to back up my project to the GitHub and pressed "Commit & Sync" in VS Code.
2. Then i got a popup message.
3. I pressed "yes"
4. Then i got an error git:fatal: couldn't find remote ref first_feature. Logs bellow.

No changes were uploaded to GitHub. What do i do wrong while backing up my project?

[2022-09-12T19:10:06.076Z] > git cat-file -s 0a42833eef54b4ecb9c6ae836b0abb03869e4838 [40ms]
[2022-09-12T19:10:06.143Z] > git show --textconv :index.html [48ms]
[2022-09-12T19:10:06.344Z] > git pull --tags origin first_feature [1595ms]
[2022-09-12T19:10:06.344Z] fatal: couldn't find remote ref first_feature
[2022-09-12T19:10:21.460Z] > git config --get commit.template [40ms]
[2022-09-12T19:10:49.832Z] > git log --oneline --cherry first_feature...first_feature@{upstream} -- [50ms]
[2022-09-12T19:10:51.393Z] > git pull --tags origin first_feature [1558ms]
[2022-09-12T19:10:51.393Z] fatal: couldn't find remote ref first_feature