Error message

• Deprecated function: Return type of DateObject::__wakeup() should either be compatible with DateTime::__wakeup(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include_once() (line 158 of /var/www/ee.old.uth.gr/sites/all/modules/date/date_api/date_api.module).
• Deprecated function: Return type of DateObject::format($format, $force = false) should either be compatible with DateTime::format(string $format): string, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include_once() (line 158 of /var/www/ee.old.uth.gr/sites/all/modules/date/date_api/date_api.module).
• Deprecated function: Return type of DateObject::setTimezone($tz, $force = false) should either be compatible with DateTime::setTimezone(DateTimeZone $timezone): DateTime, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include_once() (line 158 of /var/www/ee.old.uth.gr/sites/all/modules/date/date_api/date_api.module).
• Deprecated function: Return type of DBObject::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 7 of /var/www/ee.old.uth.gr/sites/all/modules/eck/eck.classes.inc).
• Deprecated function: Return type of DBObject::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 7 of /var/www/ee.old.uth.gr/sites/all/modules/eck/eck.classes.inc).
• Deprecated function: Return type of DBObject::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 7 of /var/www/ee.old.uth.gr/sites/all/modules/eck/eck.classes.inc).
• Deprecated function: Return type of DBObject::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 7 of /var/www/ee.old.uth.gr/sites/all/modules/eck/eck.classes.inc).
• Deprecated function: Return type of DBObject::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 7 of /var/www/ee.old.uth.gr/sites/all/modules/eck/eck.classes.inc).
• Deprecated function: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in url_is_external() (line 2393 of /var/www/ee.old.uth.gr/includes/common.inc).
• Deprecated function: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in url_is_external() (line 2395 of /var/www/ee.old.uth.gr/includes/common.inc).
• Deprecated function: ltrim(): Passing null to parameter #1 ($string) of type string is deprecated in url() (line 2311 of /var/www/ee.old.uth.gr/includes/common.inc).