angular-auth-oidc-client issue while loading application

Question

started getting this issue while loading app, initially it was not happening. any idea?

Thanks in advance

Getting auth well known endpoints failed on start [n]

angular-auth-oidc-client.js:169 Getting auth well known endpoints failed on start [n]
logError @ angular-auth-oidc-client.js:169
(anonymous) @ angular-auth-oidc-client.js:1135
error @ catchError.js:27
_error @ tap.js:56
error @ Subscriber.js:55
_error @ Subscriber.js:75
error @ Subscriber.js:55
_error @ Subscriber.js:75
error @ Subscriber.js:55
_error @ Subscriber.js:75
error @ Subscriber.js:55
_tryNext @ mergeMap.js:47
_next @ mergeMap.js:34
next @ Subscriber.js:49
(anonymous) @ subscribeToArray.js:3
_trySubscribe @ Observable.js:42
subscribe @ Observable.js:28
call @ mergeMap.js:19
subscribe @ Observable.js:23
call @ filter.js:13
subscribe @ Observable.js:23
call @ map.js:16
subscribe @ Observable.js:23
call @ map.js:16
subscribe @ Observable.js:23
call @ tap.js:16
subscribe @ Observable.js:23
call @ catchError.js:14
subscribe @ Observable.js:23
call @ tap.js:16