Can't update WordPress instance settings in Plesk: Unable to find row with id in smb_apsMetas table

Symptoms

• Pressing [change login settings] in WP Toolkit returns an error:

  PLESK_ERROR: Internal error:
  Unable to find row with id in smb_apsMetas table.

• These messages are logged to /var/log/plesk/panel.log with SQL query debug logs enabled:

  CONFIG_TEXT: [2018-05-19 00:25:22] DEBUG [dbquery] [72] SQL: SELECT `smb_apsInstances`.* FROM `smb_apsInstances` WHERE (((`smb_apsInstances`.`id` = 29)))
  [2018-05-19 00:25:22] DEBUG [dbquery] [72] END: 0.00771 sec
  [2018-05-19 00:25:22] ERR [panel] Unable to find row with id in smb_apsMetas table.:

Cause

Plesk database inconsistency.

Resolution

1. Connect to the server over SSH

2. Back up the psa database

   # plesk db dump psa > backup.sql

3. Access MariaDB

   # plesk db

4. Check these entries in /var/log/plesk/panel.log with the ID from the SQL debug logs

   MYSQL_LIN: SELECT * FROM smb_apsInstances WHERE id=29;
   +----+-----------------+-----------+--------+---------------------------+---------------------------+
   | id | parentContextId | contextId | metaId | uuid | registryResourceId |
   +----+-----------------+-----------+--------+---------------------------+---------------------------+
   | 29 | 36 | 41 | 12 | a3133579-...-1ef4c1dfbdb3 | 8e786998-...-03ae740b6c54 |
   +----+-----------------+-----------+--------+---------------------------+---------------------------+
   1 row in set (0.00 sec)

   MYSQL_LIN: SELECT * FROM smb_apsMetas WHERE id=12;
   +----+-----------+-----------+----------------------------------------------+-------+-----------+
   | id | name | serviceId | xpath | class | contextId |
   +----+-----------+-----------+----------------------------------------------+-------+-----------+
   | 12 | WordPress | wordpress | aps::aps12::http://wordpress.org/::wordpress | | 36 |
   +----+-----------+-----------+----------------------------------------------+-------+-----------+
   1 row in set (0.00 sec)

   MYSQL_LIN: SELECT * FROM smb_apsContexts WHERE id=36;
   +----+-------------+-----------+-------------------------+----------------------+
   | id | contextType | packageId | requirementContextClass | requirementContextId |
   +----+-------------+-----------+-------------------------+----------------------+
   | 36 | 0 | 12 | NULL | NULL |
   +----+-------------+-----------+-------------------------+----------------------+
   1 row in set (0.00 sec)

5. If some are missing, restore them manually from the last valid psa database dump in /var/lib/psa/dumps/. For example:

   MYSQL_LIN: INSERT INTO smb_apsInstances VALUES (29,36,41,12,'a3133579-XXXX-XXXX-XXXX-1ef4c1dfbdb3','8e786998-XXXX-XXXX-XXXX-03ae740b6c54');
   Query OK, 1 row affected (0.01 sec)

   MYSQL_LIN: INSERT INTO smb_apsMetas VALUES (12,'WordPress','wordpress','aps::aps12::http://wordpress.org/::wordpress','',36);
   Query OK, 1 row affected (0.01 sec)

   MYSQL_LIN: INSERT INTO smb_apsContexts VALUES (36,0,12,NULL,NULL);
   Query OK, 1 row affected (0.01 sec)

If the issue persists, follow these steps:

1. Back up the WP Toolkit SQLite database

# cp /usr/local/psa/var/modules/wp-toolkit/wp-toolkit.sqlite3{,.backup}

2. Fix the extra records from the WP Toolkit database with these commands

# sqlite3 /usr/local/psa/var/modules/wp-toolkit/wp-toolkit.sqlite3
SQLite version 3.7.17 2013-05-20 00:56:22
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> .mode column
sqlite> .headers ON
sqlite> select * from Instances where apsInstanceId=29;
id domainId path isIgnored apsInstanceId
---------- ---------- ---------- ---------- -------------
1 4 /httpdocs 0
sqlite> update Instances set apsInstanceId=NULL where id=1;

3. Go to Tools & Settings > WordPress and run Check for Updates