Error message

• Deprecated function: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in _filter_url_trim() (line 1664 of /home/dh_sj288g/stemcore.org/modules/filter/filter.module).
• Deprecated function: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in _filter_url_trim() (line 1664 of /home/dh_sj288g/stemcore.org/modules/filter/filter.module).
• Deprecated function: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in _filter_url_trim() (line 1664 of /home/dh_sj288g/stemcore.org/modules/filter/filter.module).
• Deprecated function: Return type of DatabaseCondition::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 1652 of /home/dh_sj288g/stemcore.org/includes/database/query.inc).
• Deprecated function: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in drupal_random_bytes() (line 2268 of /home/dh_sj288g/stemcore.org/includes/bootstrap.inc).
• Deprecated function: rtrim(): Passing null to parameter #1 ($string) of type string is deprecated in url() (line 2349 of /home/dh_sj288g/stemcore.org/includes/common.inc).
• Deprecated function: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in url_is_external() (line 2393 of /home/dh_sj288g/stemcore.org/includes/common.inc).
• Deprecated function: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in url_is_external() (line 2395 of /home/dh_sj288g/stemcore.org/includes/common.inc).
• Deprecated function: ltrim(): Passing null to parameter #1 ($string) of type string is deprecated in url() (line 2311 of /home/dh_sj288g/stemcore.org/includes/common.inc).