Deprecated Functionality: trim()

[gexxx05]

Prerequisites

• [x ] I have my server set up correctly.
• [x ] I am using a supported version of Magento 2.

Versions

Magento 2 version: 2.4.6-p3
PHP version: 8.2

Issue

Problem description:

Exception: Deprecated Functionality: trim(): Passing null to parameter ($string) of type string is deprecated in /www/html/vendor/qenta/magento2-qcp/Model/AbstractPayment.php on line 576

If instructions are empty the function below pass null to trim, and this is not allowed anymore.
Maybe there are some more trims where a null value can happend.

We should change this:

public function getInstructions()
{
    return trim($this->getConfigData('instructions'));
}

to:

public function getInstructions()
{
    return trim($this->getConfigData('instructions') ?? '');
}

Steps to reproduce:

Activate module and payment method, leave instruction field blank, go to cart. Check debug or system log, the error message should appeare.