Error

Optimize image layers failed

    Imagick->optimizeimagelayers() in XenForo/Image/ImageMagick/Pecl.php at line 222
    XenForo_Image_Imagemagick_Pecl->output() in XenForo/Model/Avatar.php at line 131
    XenForo_Model_Avatar->applyAvatar() in XenForo/Model/Avatar.php at line 69
    XenForo_Model_Avatar->uploadAvatar() in XenForo/ControllerPublic/Account.php at line 548
    XenForo_ControllerPublic_Account->actionAvatarUpload() in AvatarGallery/ControllerPublic/Account.php at line 25
    AvatarGallery_ControllerPublic_Account->actionAvatarUpload() in XenForo/FrontController.php at line 337
    XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 134
    XenForo_FrontController->run() in /home/xenforo/public_html/index.php at line 13