WKWebView does not load https URL?

Question

I have a WKWebView which should load the following url:

https://buchung.salonmeister.de/place/#offer-details-page?id=907599&venueId=301655

Answer 1

not sure if the same error reason, but the problem was the same for me under iOS9

some domains couldn't be loaded

turned out that the problem was in

- (void)webView:(WKWebView *)webView didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition, NSURLCredential *))completionHandler {

and providing back

completionHandler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, nil);

where I should have returned

completionHandler(NSURLSessionAuthChallengePerformDefaultHandling, nil);

I was using WRONG code from https://github.com/ShingoFukuyama/WKWebViewTips