Zend_File_Transfer_Exception The given destination is not writable

Dear All,
I’m running Omeka on XAMPP on Mac.
When i try to add an item, i got this error.
this error also occur when i change theme.
I’ve encounter so many error on mac with file not writable and I don’t know what to do.

Omeka has encountered an error

Zend_File_Transfer_Exception

The given destination is not writable

Zend_File_Transfer_Exception: The given destination is not writable in /Applications/XAMPP/xamppfiles/htdocs/omeka/application/libraries/Zend/File/Transfer/Adapter/Abstract.php:1043
Stack trace:
#0 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/libraries/Omeka/File/Ingest/Upload.php(35): Zend_File_Transfer_Adapter_Abstract->setDestination(’/var/folders/4z…’)
#1 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/libraries/Omeka/File/Ingest/Upload.php(153): Omeka_File_Ingest_Upload->_buildAdapter()
#2 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/models/Builder/Item.php(237): Omeka_File_Ingest_Upload->addValidator(Object(Omeka_Validate_File_Extension))
#3 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/models/Builder/Item.php(199): Builder_Item->_addIngestValidators(Object(Omeka_File_Ingest_Upload))
#4 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/libraries/globals.php(567): Builder_Item->addFiles(‘Upload’, ‘file’, Array)
#5 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/models/Item.php(323): insert_files_for_item(Object(Item), ‘Upload’, ‘file’, Array)
#6 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/models/Item.php(233): Item->_uploadFiles()
#7 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/libraries/Omeka/Record/AbstractRecord.php(280): Item->beforeSave(Array)
#8 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/libraries/Omeka/Record/AbstractRecord.php(529): Omeka_Record_AbstractRecord->runCallbacks(‘beforeSave’, Array)
#9 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/libraries/Omeka/Controller/AbstractActionController.php(188): Omeka_Record_AbstractRecord->save(false)
#10 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/controllers/ItemsController.php(148): Omeka_Controller_AbstractActionController->addAction()
#11 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/libraries/Zend/Controller/Action.php(516): ItemsController->addAction()
#12 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch(‘addAction’)
#13 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#14 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch()
#15 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/libraries/Zend/Application.php(384): Zend_Application_Bootstrap_Bootstrap->run()
#16 /Applications/XAMPP/xamppfiles/htdocs/omeka/application/libraries/Omeka/Application.php(73): Zend_Application->run()
#17 /Applications/XAMPP/xamppfiles/htdocs/omeka/admin/index.php(28): Omeka_Application->run()
#18 {main}