Simple fix for Git LFS
 Object does not exists on the server errors.
[e70f2f6f92ac50774e87160ee70c163607f69f49518fde060731b28a38a88ca8] Object does not exist on the server:  Object does not exist on the server
The long string at the start of the this error message is the OID of the file that it can’t find. In order to purge the object from the Git history we need to find out what it’s file name is, we can do that by running:
$ git log --all -p -S <OID>
Next, download BFG Repo-Cleaner
BGG allows for much quicker, and easier, git history rewriting. As an alternative to
Before beginning the history rewrite, ensure all work has been pushed to the remote, as we’ll need a fresh clone once done.
First, create a mirror of the repo:
$ git clone --mirror git://example.com/your-repo.git
Make a copy of the cloned repo at this point, in the event of a catastrophic error during re-write.
Then use BFG to delete the references to the missing files:
$ java -jar bfg.jar --delete-files <FILE_NAME> your-repo.git
This will scour the Git history, delete the specified file, and then write it out of commit history. Make sure the files have been culled from history, and then run:
$ cd your-repo.git $ git reflog expire --expire=now --all && git gc --prune=now --aggressive
Finally, push the changes back to the remote:
$ git push
This updates all refs on the remote, everyone will now need to re-download fresh clones and should have no more issues with missing LFS objects.