"CM-CFG-5024 Content Manager is unable to update the content store database schema from version "7.002" to "7.0027" because it cannot access the upgrade file(s) "dbupgrade7*-to-*_mssqlserver.sql"." trying to upgrade Controller

Symptom

English:

[Start Service]
11:31:29, 'LogService', 'StartService', 'Success'.
11:31:30, CAF-WRN-0010 CAF input validation enabled.
11:31:30, CAF-WRN-0021 CAF Third Party XSS checking disabled.
11:32:57, CM-SYS-2211 The Content Manager internal consistency check is complete.
11:32:56, CM-SYS-2210 The Content Manager internal consistency check started.
11:32:57, CM-CFG-5063 A Content Manager configuration error was detected while connecting to the content store. CM-CFG-5024 Content Manager is unable to update the content store database schema from version "7.002" to "7.0027" because it cannot access the upgrade file(s) "dbupgrade7*-to-*_mssqlserver.sql".
11:32:57, 'ContentManagerService', 'StartService', 'Failure'.

11:32:57, 'ContentManager', 'getActiveContentManager', 'Failure'.
DPR-CMI-4006 Unable to determine the active Content Manager. Will retry periodically.


German:

[Start Service]
16:28:51, 'LogService', 'StartService', 'Success'.
16:28:51, CAF-WRN-0010 CAF-Eingabeprüfung ist aktiviert.
16:28:51, CAF-WRN-0021 CAF-Prüfung für XSS anderer Anbieter ist inaktiviert.
16:30:10, 'ContentManagerService', 'StartService', 'Failure'.

16:30:10, CM-SYS-2210 Die interne Konsistenzüberprüfung des Content Managers wurde gestartet.
16:30:10, CM-CFG-5063 Beim Herstellen einer Verbindung zum Content Store wurde ein Content Manager-Konfigurationsfehler gefunden. CM-CFG-5024 Content Manager kann das Content Store-Datenbankschema nicht von Version '7.002' auf '7.0027' aktualisieren, weil kein Zugriff auf die Aktualisierungsdatei(en) 'dbupgrade7*-to-*_mssqlserver.sql' besteht.
16:30:10, CM-SYS-2211 Die interne Konsistenzüberprüfung des Content Managers ist abgeschlossen.
16:30:11, 'ContentManager', 'getActiveContentManager', 'Failure'.DPR-CMI-4006 Der aktive Content Manager kann nicht festgestellt werden. Es werden regelmäßige Neuversuche durchgeführt.
<.....>
16:30:46, 'SACamSrvc', 'StopService', 'Success'.
16:30:46, 'LogService', 'StopService', 'Success'.

[Start Service]
[ ERROR ] CFG-ERR-0103 Unable to start IBM Cognos service.
Execution of the external process returns an error code value of '-1'."

English:
CM-CFG-5063 A Content Manager configuration error was detected while connecting to the content store. CM-CFG-5024 Content Manager is unable to update the content store database schema
from version "7.002" to "7.0026" because it cannot access the upgrade file(s) "dbupgrade7*-to-*_db2.sql".