Unable to install Plesk updates: Some database entries related to Panel IP addresses are corrupted

Symptoms

Plesk update fails: 

Some database entries related to Panel IP addresses are corrupted. Please see kb.plesk.com/en/113826 for the solution.

Cause

Plesk database inconsistency. One or more IP address collections are assigned to a non-existent IP address.

Resolution

1. Connect to Plesk server using SSH.
2. Back up Plesk database.
3. Access Plesk database:

   # plesk db

4. Find IP address collections with non-existent IP addresses assigned:

   select * from IpAddressesCollections where ipAddressId not in (select id from IP_Addresses);
   +----------------+-------------+
   | ipCollectionId | ipAddressId |
   +----------------+-------------+
   | 245            | 0           |
   +----------------+-------------+

5. Delete orphaned records (copy the corresponding IDs found in the previous step):

   delete from IpAddressesCollections where ipCollectionId=245 and ipAddressId=0;

   Note: If there are more than 1 ID in step 4, repeat step 5 for each of them.