Redirect stderr out to stdout with use pil.

Upload.class.php

@@ -124,11 +124,12 @@ abstract class Upload
 			               . $pil_options
 			               . ' ' . $tmp_file_path
 			               . ' ' . $file_path;
-			    passthru( $command, $code );
+                //ob_start();
+			    passthru( 'exec 2>&1; ' . $command, $code );
 			    if ($code !== 0) {
-				    throw new ErrorException('Command PYTHON_PIL_RESIZE: ' . $command );
+				    throw new ErrorException('Command PYTHON_PIL_RESIZE exit with code "' . $code . '": ' . $command . PHP_EOL . 'Std out: ' . ob_get_clean() );
 			    }
-			    //            ob_clean();
+			   // ob_clean();
 		    } else {
 			    if ($width || $height) {
 				    if (!(ImageVariant::getIsClass($image)) && Image::getIsSubClass($image)) {
@@ -170,4 +171,4 @@ abstract class Upload
             }
         }
     }
-}
+}