Fix /info endpoint 500 error when no openid providers were configured

pkg/modules/auth/openid/providers.go

@@ -33,7 +33,12 @@ import (
 func GetAllProviders() (providers []*Provider, err error) {
 	ps, err := keyvalue.Get("openid_providers")
 	if err != nil && kerr.IsErrValueNotFoundForKey(err) {
-		rawProvider := config.AuthOpenIDProviders.Get().([]interface{})
+		rawProviders := config.AuthOpenIDProviders.Get()
+		if rawProviders == nil {
+			return nil, nil
+		}
+
+		rawProvider := rawProviders.([]interface{})
 
 		for _, p := range rawProvider {
 			pi := p.(map[interface{}]interface{})

pkg/routes/api/v1/info.go

@@ -17,6 +17,7 @@
 package v1
 
 import (
+	"code.vikunja.io/api/pkg/log"
 	"net/http"
 
 	"code.vikunja.io/api/pkg/config"
@@ -98,7 +99,8 @@ func Info(c echo.Context) error {
 
 	providers, err := openid.GetAllProviders()
 	if err != nil {
-		return err
+		log.Errorf("Error while getting openid providers for /info: %s", err)
+		// No return here to not break /info
 	}
 
 	info.AuthInfo.OpenIDConnect.Providers = providers