Gallery phpThumbOf Could not generate thumbnail

[2013-11-15 13:44:43] (ERROR @ /assets/components/gallery/connector.php) [phpThumbOf] Could not generate thumbnail: http://www.jdtrade.com.pl/assets/gallery/4/32.png - Debug: Array ( 
[0] => phpThumb() v1.7.9-200712090829 in file "phpthumb.class.php" on line 216 
[1] => setCacheDirectory() starting with config_cache_directory = "/home/grupajd/domains/jdtrade.com.pl/public_html/core/cache/phpthumb/" in file "phpthumb.class.php" on line 919 
[2] => setting config_cache_directory to realpath(/home/grupajd/domains/jdtrade.com.pl/public_html/core/cache/phpthumb) = "/home/grupajd/domains/jdtrade.com.pl/public_html/core/cache/phpthumb" in file "phpthumb.class.php" on line 947 
[3] => setSourceFilename(http://www.jdtrade.com.pl/assets/gallery/4/32.png) set $this->sourceFilename to "http://www.jdtrade.com.pl/assets/gallery/4/32.png" in file "phpthumb.class.php" on line 243 
[4] => setCacheDirectory() starting with config_cache_directory = "/home/grupajd/domains/jdtrade.com.pl/public_html/assets/components/gallery/cache/" in file "phpthumb.class.php" on line 919 
[5] => setting config_cache_directory to realpath(/home/grupajd/domains/jdtrade.com.pl/public_html/assets/components/gallery/cache) = "/home/grupajd/domains/jdtrade.com.pl/public_html/assets/components/gallery/cache" in file "phpthumb.class.php" on line 947 
[6] => setSourceFilename(http://www.jdtrade.com.pl/assets/gallery/4/32.png) set $this->sourceFilename to "http://www.jdtrade.com.pl/assets/gallery/4/32.png" in file "phpthumb.class.php" on line 243 
[7] => skipping CleanUpCacheDirectory() set to purge (30.0 days; 100.00MB; 10,000 files) in file "phpthumb.class.php" on line 652 
[8] => file_exists() = 0 in file "phpthumb.class.php" on line 1101 
[9] => is_executable() = 0 in file "phpthumb.class.php" on line 1102 
[10] => ImageMagickThumbnailToGD() aborting because cannot find convert in $this->config_imagemagick_path (), and `which convert` returned () in file "phpthumb.class.php" on line 1131 
[11] => $AvailableImageOutputFormats = array(text;ico;bmp;wbmp;gif;png;jpeg) in file "phpthumb.class.php" on line 884 
[12] => $this->thumbnailFormat set to $this->config_output_format "jpeg" in file "phpthumb.class.php" on line 895 
[13] => $this->thumbnailFormat set to $this->f "png" in file "phpthumb.class.php" on line 902 
[14] => $this->thumbnailQuality set to "99" in file "phpthumb.class.php" on line 912 
[15] => $this->sourceFilename set to "http://www.jdtrade.com.pl/assets/gallery/4/32.png" in file "phpthumb.class.php" on line 813 [16] => setCacheDirectory() starting with config_cache_directory = "/home/grupajd/domains/jdtrade.com.pl/public_html/assets/components/gallery/cache" in file "phpthumb.class.php" on line 919 
[17] => setting config_cache_directory to realpath(/home/grupajd/domains/jdtrade.com.pl/public_html/assets/components/gallery/cache) = "/home/grupajd/domains/jdtrade.com.pl/public_html/assets/components/gallery/cache" in file "phpthumb.class.php" on line 947 
[18] => SetCacheFilename() _src set from md5($this->sourceFilename) "http://www.jdtrade.com.pl/assets/gallery/4/32.png" = "42f2b3168728f47de30802ce6ad6f98a" in file "phpthumb.class.php" on line 3077 
[19] => SetCacheFilename() _par set from md5(_zc1_h500_w556_dpi150) in file "phpthumb.class.php" on line 3110 
[20] => starting ExtractEXIFgetImageSize() in file "phpthumb.class.php" on line 2897 
[21] => GetImageSize("http://www.jdtrade.com.pl/assets/gallery/4/32.png") failed in file "phpthumb.class.php" on line 2920 
[22] => $this->useRawIMoutput=true after checking $UnAllowedParameters in file "phpthumb.class.php" on line 1232 
[23] => ImageMagickThumbnailToGD() aborting because ImageMagickCommandlineBase() failed in file "phpthumb.class.php" on line 1865 
[24] => ImageMagickThumbnailToGD() failed in file "phpthumb.class.php" on line 2927 
[25] => SetOrientationDependantWidthHeight() starting with ""x"" in file "phpthumb.class.php" on line 2876 
[26] => SetOrientationDependantWidthHeight() setting w="556", h="500" in file "phpthumb.class.php" on line 2892 
[27] => exif_thumbnail() does not exist, cannot extract EXIF thumbnail in file "phpthumb.class.php" on line 2974 
[28] => starting SourceImageToGD() in file "phpthumb.class.php" on line 3229 
[29] => $this->useRawIMoutput=true after checking $UnAllowedParameters in file "phpthumb.class.php" on line 1232 
[30] => ImageMagickThumbnailToGD() aborting because ImageMagickCommandlineBase() failed in file "phpthumb.class.php" on line 1865 
[31] => starting ImageCreateFromFilename(http://www.jdtrade.com.pl/assets/gallery/4/32.png) in file "phpthumb.class.php" on line 3152 
[32] => empty $filename or GetImageSize(http://www.jdtrade.com.pl/assets/gallery/4/32.png) failed in file "phpthumb.class.php" on line 3201 [33] => Populating $rawimagedata in file "phpthumb.class.php" on line 3209 
[34] => cannot fopen(http://www.jdtrade.com.pl/assets/gallery/4/32.png) in file "phpthumb.class.php" on line 3212 
[35] => Not using EXIF thumbnail data because $this->exif_thumbnail_data is empty in file "phpthumb.class.php" on line 3278 
[36] => $this->gdimg_source is still empty in file "phpthumb.class.php" on line 3330 
[37] => ImageMagickThumbnailToGD() failed in file "phpthumb.class.php" on line 3332 
[38] => phpThumb() v1.7.9-200712090829 Unknown image type identified by "" () in SourceImageToGD()[3444] in file "phpthumb.class.php" on line 3647 
[39] => SourceImageToGD() failed in file "phpthumb.class.php" on line 323 ) 

<Directory "/var/www/MySite/html">
...
</Directory>
...
alias /test/modx /var/webapps/MODx_Test

$AbsoluteFilename = $this->config_document_root.$filename;