Remove all fmr.Println and add zerolog logging

renderer/renderer.go

@@ -10,6 +10,7 @@ import (
 	"git.coopgo.io/coopgo-platform/emailing"
 	"git.coopgo.io/coopgo-platform/groups-management/storage"
 	"github.com/coreos/go-oidc/v3/oidc"
+	"github.com/rs/zerolog/log"
 	"github.com/spf13/viper"
 )
 
@@ -66,7 +67,7 @@ func (renderer *Renderer) Render(name string, w http.ResponseWriter, r *http.Req
 
 	err := t.ExecuteTemplate(w, "main", state)
 	if err != nil {
-		fmt.Println(err)
+		log.Error().Err(err).Msg("")
 	}
 }
 
@@ -95,7 +96,7 @@ func (renderer *Renderer) RenderNoLayout(name string, w http.ResponseWriter, r *
 	t = template.Must(t.ParseFiles(prefixed_files...))
 	err := t.ExecuteTemplate(w, "main", state)
 	if err != nil {
-		fmt.Println(err)
+		log.Error().Err(err).Msg("")
 	}
 }