I would start by looking at the file and line that the error is reporting as containing the undefined function:
PHP Fatal error: Uncaught Symfony\Component\Debug\Exception\FatalThrowableError:
Call to undefined function array_except() in /home/.../web/app/uploads/cache/e117d429b9cfdfa2a14babb104e5efa82d622a76.php:40
So you want to look at line 40 in the file web/app/uploads/cache/e117d429b9cfdfa2a14babb104e5efa82d622a76.php (which is a compiled blade).
guys thank you for your time and constant patience, but I had to “brutalize” the theme, by re-starting from scratch -> new bedrock -> composer install -> new sage -> yarn install -> moved my theme in it.