Warning: Undefined property: DOMElement::$tagName in /home/niceti/domains/infoazar.ir/public_html/wp-content/plugins/wp-rocket/inc/Engine/Optimization/LazyRenderContent/Frontend/Processor/Dom.php on line 145
Fatal error: Uncaught TypeError: strtoupper(): Argument #1 ($string) must be of type string, null given in /home/niceti/domains/infoazar.ir/public_html/wp-content/plugins/wp-rocket/inc/Engine/Optimization/LazyRenderContent/Frontend/Processor/Dom.php:145
Stack trace:
#0 /home/niceti/domains/infoazar.ir/public_html/wp-content/plugins/wp-rocket/inc/Engine/Optimization/LazyRenderContent/Frontend/Processor/Dom.php(145): strtoupper()
#1 /home/niceti/domains/infoazar.ir/public_html/wp-content/plugins/wp-rocket/inc/Engine/Optimization/LazyRenderContent/Frontend/Processor/Dom.php(107): WP_Rocket\Engine\Optimization\LazyRenderContent\Frontend\Processor\Dom->add_hash_to_element()
#2 /home/niceti/domains/infoazar.ir/public_html/wp-content/plugins/wp-rocket/inc/Engine/Optimization/LazyRenderContent/Frontend/Controller.php(155): WP_Rocket\Engine\Optimization\LazyRenderContent\Frontend\Processor\Dom->add_hashes()
#3 /home/niceti/domains/infoazar.ir/public_html/wp-content/plugins/wp-rocket/inc/Engine/Optimization/LazyRenderContent/Frontend/Controller.php(128): WP_Rocket\Engine\Optimization\LazyRenderContent\Frontend\Controller->add_hashes()
#4 /home/niceti/domains/infoazar.ir/public_html/wp-content/plugins/wp-rocket/inc/Engine/Optimization/LazyRenderContent/Frontend/Subscriber.php(45): WP_Rocket\Engine\Optimization\LazyRenderContent\Frontend\Controller->add_hashes_when_allowed()
#5 /home/niceti/domains/infoazar.ir/public_html/wp-includes/class-wp-hook.php(324): WP_Rocket\Engine\Optimization\LazyRenderContent\Frontend\Subscriber->add_hashes_when_allowed()
#6 /home/niceti/domains/infoazar.ir/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters()
#7 /home/niceti/domains/infoazar.ir/public_html/wp-content/plugins/wp-rocket/inc/Engine/Optimization/Buffer/Optimization.php(100): apply_filters()
#8 [internal function]: WP_Rocket\Engine\Optimization\Buffer\Optimization->maybe_process_buffer()
#9 /home/niceti/domains/infoazar.ir/public_html/wp-includes/functions.php(5471): ob_end_flush()
#10 /home/niceti/domains/infoazar.ir/public_html/wp-includes/class-wp-hook.php(324): wp_ob_end_flush_all()
#11 /home/niceti/domains/infoazar.ir/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#12 /home/niceti/domains/infoazar.ir/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()
#13 /home/niceti/domains/infoazar.ir/public_html/wp-includes/load.php(1304): do_action()
#14 [internal function]: shutdown_action_hook()
#15 {main}
thrown in /home/niceti/domains/infoazar.ir/public_html/wp-content/plugins/wp-rocket/inc/Engine/Optimization/LazyRenderContent/Frontend/Processor/Dom.php on line 145
