diff --git a/server/session/aux.go b/server/session/aux.go
index 3761a46..93993c8 100644
--- a/server/session/aux.go
+++ b/server/session/aux.go
@@ -65,7 +65,7 @@ func GetImageProxyPrefix(r *http.Request) string {
 func urlAuthority(url url.URL) string {
 	r := ""
 	if (url.Scheme != "") != (url.Host != "") {
-		log.Panicf("url must have both scheme and authority or neither: %s", url.String())
+		log.Printf("url must have both scheme and authority or neither: %s", url.String())
 	}
 	if url.Scheme != "" {
 		r += url.Scheme + "://"