My 1.7.7 prestashop was ready and I switched to live www.lord.gr and then move the old website (1.6.1.11) to a subfolder.
I have worked with the theme and the addons on a /subfolder/ and in a new database in my domain. I made some test orders and it was working fine.
Then I change the URL in the Multishop Tab and move the new website.
Everything seem to work ok, but the next day, I getting module errors and the message in front office and back office: ""Cannot use a scalar value as an array".
caching is disabled and have been clear the cach more then once (performance tab). I also have check the cache folders, had only the index.php
What do I missing? (PHP Version 7.1.33)