Upload first commit not work

I can not upload files. I keep getting the following error:

git -c diff.mnemonicprefix=false -c core.quotepath=false push -v --tags --set-upstream origin master:master
Pushing to https://khadgar1@bitbucket.org/Boooh/spac-start-mobile.git\\
POST git-receive-pack (chunked)
error: RPC failed; result=55, HTTP code = 0
fatal: The remote end hung up unexpectedly
fatal: The remote end hung up unexpectedly
Everything up-to-date
Completed with errors, see above