fix: proper error if provided url is not shared base

Re #3927

Signed-off-by: mertmit <mertmit99@gmail.com>

packages/nocodb/src/lib/meta/api/sync/helpers/job.ts

@@ -191,6 +191,13 @@ export default async (
     rtc.fetchAt.count++;
     rtc.fetchAt.time += duration;
     
+    if (!ft.baseId) {
+      throw {
+        message:
+          'Invalid Shared Base ID :: Ensure www.airtable.com/<SharedBaseID> is accessible. Refer https://bit.ly/3x0OdXI for details',
+      };
+    }
+
     const file = ft.schema;
     baseId = ft.baseId;
     base = new Airtable({ apiKey: sDB.apiKey }).base(baseId);