500 (Internal Server Error) with blank page after successful login

After I made a change in a logic_hooks.php file (/custom/modules/[module_name]/logic_hooks.php) and rebuilt it, I have a blank top page (Home page) after log-in.
I can’t go to admin page, so I can’t run the “Quick repair and rebuild”.
The weird thing is that the page-rendering stops in the middle of the dropdown menu in header.
Any idea?

Docker install/vmware
Debian GNU/Linux 9(stretch)

You probably have a PHP Fatal error in your PHP error log.

In your php.ini, there is an entry error_log pointing to that file.

I found the log file as you pointed out and proved that it was just a syntax error.
Thank you so much!

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