'Error: error occurs during upload', 'invalid_resource_params' => 'Error: invalid resource parameters', 'invalid_resource_size' => 'Error: invalid resource size', 'invalid_resource_type' => 'Error: invalid resource type', 'create_subfolder_fail' => 'Error: fail to create subfolder', 'invalid_chunk_params' => 'Error: chunk parameters are invalid', 'invalid_operation' => 'Error: operation is forbidden', 'http_post_only' => 'Error: upload must through HTTP POST', 'create_resource_fail' => 'Error: fail to create resource', 'write_resource_fail' => 'Error: fail to write resource', 'delete_resource_fail' => 'Error: fail to delete resource', 'rename_resource_fail' => 'Error: fail to rename resource', 'create_header_fail' => 'Error: fail to create header', 'write_header_fail' => 'Error: fail to write head resource', 'read_header_fail' => 'Error: fail to read head resource', 'delete_header_fail' => 'Error: fail to delete head resource', ];