/home/mao/.mysql/workbench/connections.xml:1: parser error : Document is empty

^
/home/mao/.mysql/workbench/connections.xml:1: parser error : Start tag expected, '<' not found

^
/home/mao/.mysql/workbench/server_instances.xml:1: parser error : Document is empty

^
/home/mao/.mysql/workbench/server_instances.xml:1: parser error : Start tag expected, '<' not found

^
Ready.