KControllerExceptionResourceNotFound [404]

File not found
.../components/com_docman/controller/download.php:93
88                     }
89                     catch (InvalidArgumentException $e) {
90                         throw new KControllerExceptionResourceNotFound('File not found');
91                     }
92                 }
93                 else  throw new KControllerExceptionResourceNotFound('File not found');
94             }
95             else throw new RuntimeException('Stream wrapper is missing');
96         }
97         else throw new KControllerExceptionResourceNotFound('Document not found');
98     }