When I try to upload a file, PHP is throwing an error, but I do not know how to decipher it.
Fatal error: Uncaught Error: Call to undefined function exec() in /customers/9/0/4/wattscollection.cards/httpd.www/application/models/File.php:311 Stack trace: #0 /customers/9/0/4/wattscollection.cards/httpd.www/application/libraries/Omeka/File/Ingest/AbstractIngest.php(258): File->setDefaults('/tmp/a1b28e9924...') #1 /customers/9/0/4/wattscollection.cards/httpd.www/application/libraries/Omeka/File/Ingest/AbstractIngest.php(184): Omeka_File_Ingest_AbstractIngest->_createFile('/tmp/a1b28e9924...', 'Front.jpg', Array, NULL) #2 /customers/9/0/4/wattscollection.cards/httpd.www/application/models/Builder/Item.php(201): Omeka_File_Ingest_AbstractIngest->ingest('file') #3 /customers/9/0/4/wattscollection.cards/httpd.www/application/libraries/globals.php(567): Builder_Item->addFiles('Upload', 'file', Array) #4 /customers/9/0/4/wattscollection.cards/httpd.www/application/models/Item.php(323): insert_files_for_item(Object(Item), 'Upload', 'file', Array) #5 /customers/9/0/4/wattscollection.cards/httpd.www/application/models/Item.php(233): Item->_uploadFiles() #6 /customers/9/0/4/wattscollection.cards/httpd.www/application/libraries/Omeka/Record/AbstractRecord.php(280): Item->beforeSave(Array) #7 /customers/9/0/4/wattscollection.cards/httpd.www/application/libraries/Omeka/Record/AbstractRecord.php(529): Omeka_Record_AbstractRecord->runCallbacks('beforeSave', Array) #8 /customers/9/0/4/wattscollection.cards/httpd.www/application/libraries/Omeka/Controller/AbstractActionController.php(188): Omeka_Record_AbstractRecord->save(false) #9 /customers/9/0/4/wattscollection.cards/httpd.www/application/controllers/ItemsController.php(148): Omeka_Controller_AbstractActionController->addAction() #10 /customers/9/0/4/wattscollection.cards/httpd.www/application/libraries/Zend/Controller/Action.php(516): ItemsController->addAction() #11 /customers/9/0/4/wattscollection.cards/httpd.www/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch('addAction') #12 /customers/9/0/4/wattscollection.cards/httpd.www/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http)) #13 /customers/9/0/4/wattscollection.cards/httpd.www/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch() #14 /customers/9/0/4/wattscollection.cards/httpd.www/application/libraries/Zend/Application.php(384): Zend_Application_Bootstrap_Bootstrap->run() #15 /customers/9/0/4/wattscollection.cards/httpd.www/application/libraries/Omeka/Application.php(73): Zend_Application->run() #16 /customers/9/0/4/wattscollection.cards/httpd.www/admin/index.php(28): Omeka_Application->run() #17 {main} thrown in /customers/9/0/4/wattscollection.cards/httpd.www/application/models/File.php on line 311