Which websites are searched by your Custom Search setup? Can all of them be reached successfully at any time, otherwise than by way of Customer Search, simply from a browser? It is usually a permission problem that causes the 403 errors. You may gather more detail from the "403—Forbidden" sub-chapter <https://cloud.google.com/storage/docs/json_api/v1/status-codes#403_Forbidden> of the "HTTP Status and Error Codes for JSON" documentation page.
-- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/b1258e0d-94aa-498d-a885-943b4d1177e6%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
