Few widgets on Dashboard showing "ERROR: No response from the server"Issue When loading Dashboard with multiple widgets configured in it, then few widgets might show message "ERROR: No response from the server". This issue appears sporadically. CauseOne of the reason for the issue that some of the widgets load/refresh requests on the Dashboard are not returned from the server and the network tab shows a 202 for /report_viewer.do or /xmlhttp.do and 'Error: No response from the server' message on widgets then requests might be reaching the maximum Request queue limit. We see the following in the node logs: == 2021-12-09 22:29:22 (305) http-42 New transaction B61704D2DB18455412FCA7DBD3961936 #7728835 /xmlhttp.do2021-12-09 22:29:22 (306) http-42 SYSTEM WARNING *** WARNING *** Max number of waiters reached: 10 >= 10 (3 microseconds to count)2021-12-09 22:29:22 (306) http-42 SYSTEM WARNING *** WARNING *** Rejecting request #7728835 /xmlhttp.do because max waiters reached2021-12-09 22:29:22 (605) http-35 New transaction B61704D2DB18455412FCA7DBD3961936 #7728837 /xmlhttp.do2021-12-09 22:29:22 (606) http-35 SYSTEM WARNING *** WARNING *** Max number of waiters reached: 10 >= 10 (5 microseconds to count)2021-12-09 22:29:22 (606) http-35 SYSTEM WARNING *** WARNING *** Rejecting request #7728837 /xmlhttp.do because max waiters reached2021-12-09 22:29:22 (900) http-40 New transaction B61704D2DB18455412FCA7DBD3961936 #7728838 /xmlhttp.do2021-12-09 22:29:22 (900) http-40 SYSTEM WARNING *** WARNING *** Max number of waiters reached: 10 >= 10 (4 microseconds to count)2021-12-09 22:29:22 (900) http-40 SYSTEM WARNING *** WARNING *** Rejecting request #7728838 /xmlhttp.do because max waiters reached . . 2021-12-09 23:05:42 (681) http-1 New transaction B61704D2DB18455412FCA7DBD3961936 #7731710 /report_viewer.do2021-12-09 23:05:42 (681) http-1 SYSTEM WARNING *** WARNING *** Max number of waiters reached: 10 >= 10 (4 microseconds to count)2021-12-09 23:05:42 (681) http-1 SYSTEM WARNING *** WARNING *** Rejecting request #7731710 /report_viewer.do because max waiters reached2021-12-09 23:05:42 (687) http-3 New transaction B61704D2DB18455412FCA7DBD3961936 #7731711 send /amb/meta/unsubscribe2021-12-09 23:05:42 (687) http-3 SYSTEM WARNING *** WARNING *** Max number of waiters reached: 10 >= 10 (4 microseconds to count)2021-12-09 23:05:42 (688) http-3 SYSTEM WARNING *** WARNING *** Rejecting request #7731711 send /amb/meta/unsubscribe because max waiters reached2021-12-09 23:05:43 (297) http-32 New transaction B61704D2DB18455412FCA7DBD3961936 #7731713 /report_viewer.do2021-12-09 23:05:43 (297) http-32 SYSTEM WARNING *** WARNING *** Max number of waiters reached: 10 >= 10 (4 microseconds to count)2021-12-09 23:05:43 (297) http-32 SYSTEM WARNING *** WARNING *** Rejecting request #7731713 /report_viewer.do because max waiters reached2021-12-09 23:05:43 (588) http-28 New transaction B61704D2DB18455412FCA7DBD3961936 #7731714 /report_viewer.do2021-12-09 23:05:43 (588) http-28 SYSTEM WARNING *** WARNING *** Max number of waiters reached: 10 >= 10 (4 microseconds to count)2021-12-09 23:05:43 (589) http-28 SYSTEM WARNING *** WARNING *** Rejecting request #7731714 /report_viewer.do because max waiters reached2021-12-09 23:05:43 (879) http-14 New transaction B61704D2DB18455412FCA7DBD3961936 #7731715 /xmlhttp.do2021-12-09 23:05:43 (879) http-14 SYSTEM WARNING *** WARNING *** Max number of waiters reached: 10 >= 10 (4 microseconds to count)2021-12-09 23:05:43 (880) http-14 SYSTEM WARNING *** WARNING *** Rejecting request #7731715 /xmlhttp.do because max waiters reached2021-12-09 23:05:44 (170) http-25 New transaction B61704D2DB18455412FCA7DBD3961936 #7731716 /xmlhttp.do2021-12-09 23:05:44 (171) http-25 SYSTEM WARNING *** WARNING *** Max number of waiters reached: 10 >= 10 (4 microseconds to count)2021-12-09 23:05:44 (171) http-25 SYSTEM WARNING *** WARNING *** Rejecting request #7731716 /xmlhttp.do because max waiters reached ==ResolutionDefault limit is 10 request at all times. If the number of request is more than 10 then other requests will be ignored. You can increase this limit by creating this system property, Name: com.glide.request.max_waiters Type: Integer Value: 20 (Please Note: Don't go above 20 as they might cause performance issues)Related LinksYou might be facing symptoms like GlideAjax failure/error for the Widget load/Refresh on the Dashboard. Refer below KBs with similar cause identified for different functionality: Requests being ignored in Service Now instance (Service Portal Service Catalog) - KB0694121 Dependency Map is broken (keeps loading for hours) - KB0863675 For widgets, also review - KB0635324 - Optimize widget rendering time on responsive dashboards