Cannot pull from repository

Hi,

since the last changeset
[[https://bitbucket.org/site/master/changeset/ffe09802d1aa|ffe09802d1aa]]
we cannot pull from the repository.

https://bitbucket.org/BurakObama/hiba-ninja

We always get this error:
"Error 500: Internal Server Error"

I tried to strip said changeset but got this error instead:
"There was an error while executing the strip task."

Could you please reset the repository to its state before that changeset?

Thank you,

Robert Eckert