Solve the error in my QT_ thread_ global_ End(): 3 threads didn't exit

Interpretation of the ： FALSE my_thread_global_end(): 3 Threads did not exit
MySQL The forum gives an explanation ：
Address ：https://forums.mysql.com/read.php?51,173870,179367#msg-179367
It said , From the discussion , This seems to be a php bug instead of mysql bug, But it's in the file libmysql.dll in , Both programs exist .
This should be libmysql.dll Resulting in the existence of .
Wrong discussion address ：https://bugs.mysql.com/bug.php?id=25621

Solution ：
1. In their own mysql Library files produced by the server itself ：libmysql.dll Copy a copy to the following figure bin Directory .