Error Unknown command '\U' when restoring MySQL dump on Windows
MariaDB [theDBName]> SOURCE C:\Users\myUserName\theDBName_data.dump


Either of the following should be correct:

MariaDB [theDBName]&gt; SOURCE C:\\Users\\myUserName\\theDBName_data.dump

MariaDB [theDBName]&gt; SOURCE C:/Users/myUserName/theDBName_data.dump