fatal: bad numeric config value '5242880000' for 'http.postbuffer': out of range

Hello,

I use the command specified in your website to create a repo so to work with an existing project on my harddisk, but get this error.

~/myproject git push -u origin --all
fatal: bad numeric config value '5242880000' for 'http.postbuffer': out of range

What can I do?