Plesk Migration Manage (PMM) Shows Blank Page

On Plesk Server, Plesk Migration Manage (PMM) show Blank Page.

 

To correct the problem run following command in command prompt

 

# mysql -uadmin -p`cat /etc/psa/.psa.shadow` -D psa -e 'delete from PMM'

 

Or you may use

 

# mysql -uadmin -p`cat /etc/psa/.psa.shadow`

 

mysql> use psa
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

 

Database changed
mysql> select * from PMM;

 

You will see 40 rows of result.

 

mysql> delete from PMM;
Query OK, 40 rows affected (0.01 sec)

 

mysql>