Error on backend after installation : FastCGI: incomplete headers (0 bytes) received from server

[AntoineWR]

Hello,

After a new installation I trying to acces to the backend, I've see the login page, but after to complete the forum I've an 500 error, with the following information :

FastCGI: incomplete headers (0 bytes) received from server

Have you any idea for this problem ?

Thank for your help.

[borriglione_le]

I have a similar problem

- Server error 500 in frontend

- Logs:

[Wed Jun 22 09:18:43 2016] [error] [client 95.90.211.105] FastCGI: incomplete headers (0 bytes) received from server "/home/clients/d611dd29544b34a4144ffd122048d866/.config/apache/magento2.rom-ecommerce9.com/.fpm/php5.external", referer: http://magento2.rom-ecommerce9.com/admin_2sv2av/admin/index/index/key/93ee834a4b5c99713da5e4dd594ebad0713b54230559a06ac67870df03dc656a/
[Wed Jun 22 09:18:43 2016] [error] [client 95.90.211.105] (104)Connection reset by peer: FastCGI: comm with server "/home/clients/d611dd29544b34a4144ffd122048d866/.config/apache/magento2.rom-ecommerce9.com/.fpm/php5.external" aborted: read failed: "Connection reset by peer", referer: http://magento2.rom-ecommerce9.com/admin_2sv2av/admin/index/index/key/93ee834a4b5c99713da5e4dd594ebad0713b54230559a06ac67870df03dc656a/

[borriglione_le]

I "solved" it now by downgrading from PHP 7 to PHP 5.6. But this could not be the solution for the future