change error output of startnewevent

api/eventHandler.go

@@ -25,8 +25,7 @@ func (a *APIHandler) StartNewEvent(c *gin.Context) {
 
 	if err := a.DbHandler.StartNewEvent(name); err != nil {
 		a.logger.Error("StartNewEvent", err)
-
-		c.JSON(http.StatusInternalServerError, nil)
+		c.JSON(http.StatusBadRequest, gin.H{"message": err.Error()})
 		return
 	}