git push of repo using lfs fails

Hi,
I've created a (new) testing repository with some larger binaries tracked as lfs files. I've followed the documentation from https://www.atlassian.com/git/tutorials/git-lfs#creating-new-repository

Adding and committing the files locally goes fine. However, the push to the bitbucket.org server fails:

$ git push
Git LFS: (0 of 1 files) 5.00 MB / 5.00 MB
Authentication required: Authorization error: https://bitbucket.org/%7B%7D/%7Bceab775b-2209-4f4e-8edc-d884a5397085%7D/info/lfs/object/verify?upload_id=e435ab36-e3fe-414b-b896-2c32402f6ea1\\
Check that you have proper access to the repository
error: failed to push some refs to 'https://basmevissen@bitbucket.org/emcodev/test_git_lfs.git'

I've made the repo public in an attempt to solve my auth errors, but that did not really help:

$ git push
Git LFS: (0 of 1 files) 5.00 MB / 5.00 MB
Fatal error: Server error: https://bitbucket.org/%7B%7D/%7Bceab775b-2209-4f4e-8edc-d884a5397085%7D/info/lfs/object/verify?upload_id=8841f4a1-28d6-4091-9c9e-f8f625358d11

Errors logged to /home/bas/Workspace/emcodev/test_git_lfs/.git/lfs/objects/logs/20170305T164905.768079534.log
Use git lfs logs last to view the log.
error: failed to push some refs to 'https://basmevissen@bitbucket.org/emcodev/test_git_lfs.git'

Host info:
Centos 7 x86_64
git-lfs/2.0.0 (GitHub; linux amd64; go 1.8; git 540e90b)
git version 1.8.3.1

Any idea what is going on?