TaskQueue: Error with task : Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it’s defined in.

Check the render method of XXXX.

解决方案：去掉{}
example：
//
before：
import {Popover} from “./Popover”;

after：✔️

import Popover from “./Popover”;