HTTP Request not returning anything

Sometimes, http requests just don’t receive any response from the “HandleOnResponse” delegate I have binded to a http request in c++.

void UHttpRequest::SendRequest(FString URL, TMap<FString, FString> Headers, FString Body, HttpRequestVerb RequestVerb) {
	FString StringifiedRequestVerb = *UEnum::GetDisplayValueAsText(RequestVerb).ToString();

	FHttpRequestRef Request = FHttpModule::Get().CreateRequest();
	Request->SetURL(URL);
	Request->SetTimeout(15);
	Request->SetVerb(StringifiedRequestVerb);
	Request->SetHeader(TEXT("User-Agent"), "X-UnrealEngine-Agent");
	Request->SetHeader("Content-Type", TEXT("application/json"));

	if (Body.Len() > 0) {
		Request->SetContentAsString(Body);
	}

	if (Headers.Num() > 0) {
		for (const TPair<FString, FString>& pair : Headers) {
			Request->SetHeader(pair.Key, pair.Value);
		}
	}

	Request->OnProcessRequestComplete().BindUObject(this, &UHttpRequest::HandleOnResponse);

	Request->ProcessRequest();
}

Thanks!