Deployement on fortrabbit issue : A B O R T E D !! Git receive was timed out

Hi ! First, my knowledge about server and git are limited : I am not a fully professionnal developper since all my knowledge in this field was learnt through online tutorials. I am trying to deploy my laravel app with fortrabbit but each time I push my app I receive this message.

A B O R T E D
!! Git receive was timed out
remote: fatal: early EOF
fatal: The remote end hung up unexpectedly
error: pack-objects died of signal 13
error: failed to push some refs to < my Git remote repo >

From what I understood the issue is coming from a git configuration which does not allow me to push heavy folders. So I added those line into my git config file

[core]
    packedGitLimit = 512m 
    packedGitWindowSize = 512m 
[pack] 
    deltaCacheSize = 2047m 
    packSizeLimit = 2047m 
    windowMemory = 2047m
[http]
    postBuffer = 524288000

not working :/

Thanks for your help!