Do not panic if there is no Redsys payment set up yet

pkg/booking/admin.go

@@ -35,7 +35,9 @@ func (h *AdminHandler) Handler(user *auth.User, company *auth.Company, conn *dat
 			case http.MethodGet:
 				f := newPaymentForm(user.Locale)
 				if err := f.FillFromDatabase(r.Context(), company, conn); err != nil {
-					panic(err)
+					if !database.ErrorIsNotFound(err) {
+						panic(err)
+					}
 				}
 				f.MustRender(w, r, user, company)
 			case http.MethodPut: