Please no changes this time.

http_handlers/errors/notfound.go

@@ -0,0 +1,10 @@
+package errors
+
+import (
+	"github.com/labstack/echo/v4"
+	"net/http"
+)
+
+func NewNotFoundError(c echo.Context) error {
+	return c.JSON(http.StatusNotFound, map[string]string{"error": "Not Found"})
+}