Fatal error: Uncaught WideImage_UnsupportedFormatException: Format '' is not supported. in /var/www/html_preview/inc/extension/WideImage/MapperFactory.php:79
Stack trace:
#0 /var/www/html_preview/inc/extension/WideImage/Image.php(159): WideImage_MapperFactory::selectMapper()
#1 /var/www/html_preview/inc/extension/ThumbnailModule.new.php(96): WideImage_Image->saveToFile()
#2 /var/www/html_preview/inc/extension/ThumbnailModule.new.php(56): ThumbnailModule->save()
#3 /var/www/html_preview/inc/extension/image.php(71): ThumbnailModule->createThumbnail()
#4 {main}
thrown in /var/www/html_preview/inc/extension/WideImage/MapperFactory.php on line 79