When I run update.php after installing StructuredDiscussions, it shows following error:
Modifying ref_target field of table flow_ext_ref ...[eb200ec757335f1dea5d2ae1] [no req] Wikimedia\Rdbms\DBQueryError from line 1443 of C:\inetpub\wwwroot\plavorexitbeta\includes\libs\rdbms\database\Database.php: A database query error has occurred. Did you forget to run your application's database schema updater after upgrading? Query: ALTER TABLE flow_ext_ref CHANGE ref_target ref_target BLOB NOT NULL Function: Wikimedia\Rdbms\Database::sourceFile( C:\inetpub\wwwroot\plavorexitbeta\extensions\Flow/db_patches/patch-ref_target_not_null.sql ) Error: 1 near "CHANGE": syntax error Backtrace: #0 C:\inetpub\wwwroot\plavorexitbeta\includes\libs\rdbms\database\Database.php(1413): Wikimedia\Rdbms\Database->makeQueryException(string, integer, string, string) #1 C:\inetpub\wwwroot\plavorexitbeta\includes\libs\rdbms\database\Database.php(1186): Wikimedia\Rdbms\Database->reportQueryError(string, integer, string, string, boolean) #2 C:\inetpub\wwwroot\plavorexitbeta\includes\libs\rdbms\database\Database.php(4260): Wikimedia\Rdbms\Database->query(string, string) #3 C:\inetpub\wwwroot\plavorexitbeta\includes\libs\rdbms\database\Database.php(4195): Wikimedia\Rdbms\Database->sourceStream(resource (closed), NULL, NULL, string, NULL) #4 C:\inetpub\wwwroot\plavorexitbeta\includes\installer\DatabaseUpdater.php(683): Wikimedia\Rdbms\Database->sourceFile(string) #5 C:\inetpub\wwwroot\plavorexitbeta\includes\installer\DatabaseUpdater.php(972): DatabaseUpdater->applyPatch(string, boolean, string) #6 C:\inetpub\wwwroot\plavorexitbeta\includes\installer\DatabaseUpdater.php(482): DatabaseUpdater->modifyField(string, string, string, boolean) #7 C:\inetpub\wwwroot\plavorexitbeta\includes\installer\DatabaseUpdater.php(450): DatabaseUpdater->runUpdates(array, boolean) #8 C:\inetpub\wwwroot\plavorexitbeta\maintenance\update.php(200): DatabaseUpdater->doUpdates(array) #9 C:\inetpub\wwwroot\plavorexitbeta\maintenance\doMaintenance.php(94): UpdateMediaWiki->execute() #10 C:\inetpub\wwwroot\plavorexitbeta\maintenance\update.php(245): require_once(string) #11 {main}