aqui el problema esta que invoca a la funcion paypal_params pero esa funcion no tiene ningun return por lo tanto no envia el arreglo agregale return $params;

A PHP Error was encountered

Severity: Core Warning

Message: PHP Startup: Unable to load dynamic library 'mongodb.so' (tried: /opt/cpanel/ea-php74/root/usr/lib64/php/modules/mongodb.so (libicuuc.so.50: cannot open shared object file: No such file or directory), /opt/cpanel/ea-php74/root/usr/lib64/php/modules/mongodb.so.so (/opt/cpanel/ea-php74/root/usr/lib64/php/modules/mongodb.so.so: cannot open shared object file: No such file or directory))

Filename: Unknown

Line Number: 0

Backtrace:

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