Title: Thumbnail Generation Alert Last modified: March 31, 2022 --- # Thumbnail Generation Alert * Resolved [svuksha](https://wordpress.org/support/users/svuksha/) * (@svuksha) * [4 years, 6 months ago](https://wordpress.org/support/topic/thumbnail-generation-alert-8/) * Thumbnail Generation Alert is showing on Gallery page. After running Thumbnail Generation Test I have: * `Thumbnail generation test failed!object(WP_Error)#2477 (3) { ["errors"]=> array( 1) { ["error_loading_image"]=> array(1) { [0]=> string(25) "File doesn’t exist?"}}[" error_data"]=> array(0) { } ["additional_data":protected]=> array(0) { } } array( 2) { ["ext"]=> string(3) "png" ["type"]=> string(9) "image/png" }` * This is System info: * FooGallery version : 2.1.34 WordPress version : 5.9.2 Activated Theme : Brass Animals WordPress URL : [http://brassanimals.flywheelsites.com](http://brassanimals.flywheelsites.com) PHP version : 7.4.28 Thumb Engine : default PHP GD : Loaded (V2) PHP Imagick : Loaded WP Image Editor : FooGallery_Thumb_Image_Editor_Imagick Thumbnail Generation Test : [http://brassanimals.flywheelsites.com/wp-content/plugins/foogallery-premium/assets/logo.png](http://brassanimals.flywheelsites.com/wp-content/plugins/foogallery-premium/assets/logo.png) HTTPS Thumb Mismatch : None Available Image Editors : Array ( [0] => FooGallery_Thumb_Image_Editor_Imagick[ 1] => FooGallery_Thumb_Image_Editor_GD ) * PHP Open SSL : Loaded PHP HTTP Wrapper : Found PHP HTTPS Wrapper : Found PHP Config[allow_url_fopen] : 1 PHP Config[allow_url_include] : Extensions Active: Array ( ) * Gallery Templates : Array ( [0] => default [1] => image-viewer [2] => justified[ 3] => masonry [4] => simple_portfolio [5] => thumbnail [6] => polaroid_new [7] => foogridpro [8] => slider [9] => product_promo ) * Lightboxes : Array ( [foogallery] => FooGallery PRO Lightbox [foobox] => FooBox) * Settings : Array ( [gallery_template] => slider [gallery_sorting] => [default_gallery_settings] => 147 [caption_title_source] => caption [caption_desc_source] => desc [thumb_engine] => default [thumb_jpeg_quality] => 90 [default_crop_position] => center,center[ thumb_resize_upscale_small_color] => rgb(0,0,0) [language_imageviewer_prev_text] => Prev [language_imageviewer_next_text] => Next [language_imageviewer_of_text] => of [language_images_count_none_text] => No images [language_images_count_single_text] => 1 image [language_images_count_plural_text] => %s images [enable_custom_ready] => on [override_thumb_test] => on [custom_js] => [custom_css] => [default_retina_support] => Array ( [2x] => false [3x] => false [4x] => false ) * ) * Active Plugins : Array ( [0] => advanced-custom-fields-pro/acf.php [1] => classic- editor/classic-editor.php [2] => contact-form-7/wp-contact-form-7.php [3] => custom-post-type-ui/custom-post-type-ui.php [4] => filter-everything-pro/filter- everything.php [5] => foobox-image-lightbox/foobox-free.php [6] => foogallery- premium/foogallery.php [7] => interactive-geo-maps/interactive-geo-maps.php [ 8] => intuitive-custom-post-order/intuitive-custom-post-order.php [9] => mp3- music-player-by-sonaar/sonaar-music.php [10] => page-generator/page-generator. php [11] => svg-support/svg-support.php ) * I try with clearing Gallery cash, to enable Force GD Library and Override Thumb Test, nothing helped. What else can I do to solve this problem? Viewing 2 replies - 1 through 2 (of 2 total) * Plugin Support [elviiso](https://wordpress.org/support/users/elviiso/) * (@elviiso) * [4 years, 6 months ago](https://wordpress.org/support/topic/thumbnail-generation-alert-8/#post-15526241) * Hi [@svuksha](https://wordpress.org/support/users/svuksha/) * Sorry for the delayed response as we looked into this issue for you. * First, from the warning message, looks like as the thumbnail generation test was being run, there was a file that was supposed to be accessed but the test could not do so, which is causing this error message to be thrown. * As we were investigating why this was happening, we decided to have a look at the Thumbnail Generation Test URL ([http://brassanimals.flywheelsites.com/wp-content/plugins/foogallery-premium/assets/logo.png](http://brassanimals.flywheelsites.com/wp-content/plugins/foogallery-premium/assets/logo.png)) that’s part of the System Info and as we attempted to do so, a password protection wall was loaded instead as you can see from this image: [https://prnt.sc/BQN2a2Q53U8l](https://prnt.sc/BQN2a2Q53U8l) * This quickly made us realize that this error is being thrown because of a permission issue. Basically, the file that the test wants to access cannot be accessed because of a permissions issue and the test, therefore, outputs the “File doesn’t exist?” error since it cannot access the file. * Fortunately, this will not affect how FooGallery works and how the thumbnails are generated and so you can ignore the warning message. * Kind regards, Elvis. - This reply was modified 4 years, 6 months ago by [elviiso](https://wordpress.org/support/users/elviiso/). * Thread Starter [svuksha](https://wordpress.org/support/users/svuksha/) * (@svuksha) * [4 years, 6 months ago](https://wordpress.org/support/topic/thumbnail-generation-alert-8/#post-15528442) * Hi Elvis, * Thank you for your response. This is staging site and it is password protected. I hope this alert will disappear once we go live. * Greetings. Viewing 2 replies - 1 through 2 (of 2 total) The topic ‘Thumbnail Generation Alert’ is closed to new replies. * ![](https://ps.w.org/foogallery/assets/icon-256x256.gif?rev=2602542) * [FooGallery Photo Gallery : Image, Video & Masonry Galleries](https://wordpress.org/plugins/foogallery/) * [Frequently Asked Questions](https://wordpress.org/plugins/foogallery/#faq) * [Support Threads](https://wordpress.org/support/plugin/foogallery/) * [Active Topics](https://wordpress.org/support/plugin/foogallery/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/foogallery/unresolved/) * [Reviews](https://wordpress.org/support/plugin/foogallery/reviews/) * 2 replies * 2 participants * Last reply from: [svuksha](https://wordpress.org/support/users/svuksha/) * Last activity: [4 years, 6 months ago](https://wordpress.org/support/topic/thumbnail-generation-alert-8/#post-15528442) * Status: resolved