Level 2

The error message you are seeing is related to a change in PHP 8.3, where passing null to the trim() function has been deprecated. This issue usually occurs when a variable is not properly initialized or assigned a value before being passed to the trim() function.

Cause of the Error:
The trim() function expects a string as its argument, but when null is passed, PHP throws a deprecation notice. This typically happens if a variable is undefined or empty when passed to trim().

Solution:
To resolve this issue, you should check if the variable is null or empty before passing it to trim(). Here is an example of how to handle this:

// Assume that $string is the variable you want to pass to trim().

if (isset($string) && !empty($string)) {

$trimmed_string = trim($string);

} else {

// Handle empty or undefined cases

$trimmed_string = ”;

}

This ensures that the variable is not null and is properly initialized before being passed to trim().

Specific to Your Case:

If this error occurs during the CSV import process, you may need to check the import logic in your WooCommerce plugin. Ensure that all variables being passed to the trim() function are properly assigned values before processing.