Deprecated codes

Hi! When I activate you plugin I can see this 2 warning. After turn off your plugin, the warinings are gone from debug log.

Deprecated: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /wp-includes/functions.php on line 7329

Deprecated: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /wp-includes/functions.php on line 2189