Error: "500 internal server error" in virtualhost ubuntu 16.04

Question

I'm having a problem when I want to use my web page with virtualhost .

I have installed LAMP in Ubuntu 16.04 with permissions in the project folder with 777 ( if it does not work well it would not open nor the project, but if it opens ).

My page has a login that when I enter the correct data I get the error: 500 internal server error

Already reinstalled LAMP, changed permission groups, still it doesn't work. I was already seeing the logs that apache2 throws at me and says this: Response header name 'Expires' contains invalid characters, aborting request

It happens something curious, if I enter a wrong user and validate the authentication, I throw the personalized message that I have, however when the user and the credentials are correct it throws me the firebug "500 internal server error".

Regards.

Answer 1

Maybe after login you do some kind of redirect to a "user authenticated" area in which you are sending some meta information to the browser.

Check for some PHP code:

header('Expires: XXXX');

Maybe you have some typho error, bad formed string or characterset problems.

You could also check for some .htaccess file that set headers using the apache module.