Merge pull request #25001 from nextcloud/bugfix/23044/fix-column-name…

…-check

Fix column name to check prior to deleting

core/Migrations/Version21000Date20201120141228.php

@@ -62,7 +62,7 @@ public function changeSchema(IOutput $output, Closure $schemaClosure, array $opt
 
 		if ($schema->hasTable('systemtag')) {
 			$table = $schema->getTable('systemtag');
-			if ($table->hasColumn('systemtag')) {
+			if ($table->hasColumn('assignable')) {
 				$table->dropColumn('assignable');
 			}
 		}