fix: do index creation only if relation found

Signed-off-by: Pranav C <pranavxc@gmail.com>

packages/nocodb/src/version-upgrader/ncXcdbLTARUpgrader.ts

@@ -77,17 +77,17 @@ async function upgradeModelRelations({
               childTable: relation.tn,
               foreignKeyName: relation.cstn,
             });
-          }
 
-          // skip postgres since we were already creating the index while creating the relation
-          if (ncMeta.knex.clientType() !== 'pg') {
-            // create a new index for the column
-            const indexArgs = {
-              columns: [relation.cn],
-              tn: relation.tn,
-              non_unique: true,
-            };
-            await sqlClient.indexCreate(indexArgs);
+            // skip postgres since we were already creating the index while creating the relation
+            if (ncMeta.knex.clientType() !== 'pg') {
+              // create a new index for the column
+              const indexArgs = {
+                columns: [relation.cn],
+                tn: relation.tn,
+                non_unique: true,
+              };
+              await sqlClient.indexCreate(indexArgs);
+            }
           }
         }
         break;