The result of load/backup. The value 0 means 'No error'; The value 6561510 means 'Failed to transfer the file'; The value 6561553 means 'Username or password error'; The value 6561620 means 'The server is unreachable'; The value 6561623 means 'Failed to operate the remote file'; The value 6561625 means 'The SSH key is incorrect'; The value 6561626 means 'The path does not exist'; The value 6561627 means 'The file does not exist'.