Fatal error: Uncaught Error: Call to undefined function Smush\Core\Parser\str_contains() in /home/autho003/public_html/wp-content/plugins/wp-smushit/core/parser/class-parser.php:373 Stack trace: #0 /home/autho003/public_html/wp-content/plugins/wp-smushit/core/parser/class-parser.php(358): Smush\Core\Parser\Parser->sanitize_value('class') #1 /home/autho003/public_html/wp-content/plugins/wp-smushit/core/parser/class-parser.php(157): Smush\Core\Parser\Parser->is_safe('class') #2 /home/autho003/public_html/wp-content/plugins/wp-smushit/core/parser/class-parser.php(332): Smush\Core\Parser\Parser->get_element_attributes('<iframe class="...', 'https://authorb...') #3 /home/autho003/public_html/wp-content/plugins/wp-smushit/core/parser/class-page-parser.php(36): Smush\Core\Parser\Parser->get_iframe_elements('<!doctype html>...', 'https://authorb...') #4 /home/autho003/public_html/wp-content/plugins/wp-smushit/core/transform/class-transformer.php(53): Smush\Core\Parser\Page_Parser->parse_page() #5 /home/autho003/public_html/wp-con in /home/autho003/public_html/wp-content/plugins/wp-smushit/core/parser/class-parser.php on line 373