<ul><li>CRITICAL: Added ob_start/ob_end_clean to NetworksController.php and MediaLibraryController.php — display_errors=1 caused PHP errors in require chain to corrupt JSON responses.</li><li>HIGH N+1: Fixed getSiteNetworksDataTable — getNetworksSite() called per loop iteration; moved single pre-fetch before loop.</li><li>HIGH SECURITY: Fixed path traversal in saveNetwork — engine_icon/engine_logo passed to file_get_contents without validation; added realpath() bounds check.</li><li>MEDIUM: Fixed typo submitNetworkCred echoed Permision (missing s); JS checked Permission — error branch never matched. Fixed spelling.</li><li>MEDIUM: Fixed img tag in networks.php — typo heigh corrected to height, added onerror handler.</li><li>MEDIUM: Removed hardcoded https:// in callback URL — replaced with dynamic protocol detection.</li><li>LOW: Escaped unescaped REQUEST_URI in dead JS functions showVimeoSetup/showYouTubeSetup.</li></ul>