HTTP ERROR 500 , domain.com is currently unable to handle this request.

[NeroTCh]

Hello,
I changed php version from 7.2 to 7.3 and after exctract files and starting installation, choose language (or just reload page) I got this:

I already tried different PS versions and changing permissions to 755.

Is any Idea why I got this?

[juanrojas]

hello you have to take into account that the version of your prestashop is compatible with that version of PHP, what version do you have of PS? activate the debug mode to see what is behind the 500 error

[NeroTCh]

14 minutes ago, juanrojas said:

hello you have to take into account that the version of your prestashop is compatible with that version of PHP, what version do you have of PS? activate the debug mode to see what is behind the 500 error

I check this guide and try 1.7.7 version

 

Also try with 1.7.8 and 1.7.6

 

[Tom Girou]

So it looks like Prestashop could handle the 7.3 but what about your modules ?

[NeroTCh]

4 minutes ago, Tom Girou said:

So it looks like Prestashop could handle the 7.3 but what about your modules ?

I also checkd this 

Mcrypt, GD and PDO were missing
Added those modules, but still got same problem

I wanted to return the previous php version, but can't find where I can do this in cPanel

Where I changed version, I can't return 

[Tom Girou]

I meant the Prestashop Modules, not the PHP Modules.

[NeroTCh]

11 minutes ago, Tom Girou said:

I meant the Prestashop Modules, not the PHP Modules.

I can't even start the installation 
After extracting and go to the installation page
If click next or change language or just reload the page, I immediately got the  HTTP ERROR 500




In config/defines.inc.php I changed this line from false to true
 

And the error was like that:

 

[NeroTCh]

Ok, I add dom extension and after that everything works