Umi: Invalid key initialProps from plugin

Umi Version: 2.7.7
Dva Version: 2.4.0
Node Version: 8.15.0
Platform: macosx 10.14.5

Created on 25 Jun 2019 · 5Comments · Source: umijs/umi

What happens?

assert.js:195 Uncaught 
AssertionError {name: "AssertionError", actual: false, expected: true, operator: "==", message: "Invalid key initialProps from plugin", …}
actual: false
expected: true
generatedMessage: false
message: "Invalid key initialProps from plugin"
name: "AssertionError"
operator: "=="
stack: "AssertionError: Invalid key initialProps from plugin↵    at http://127.0.0.1:10000/umi.dll.js:46274:25↵    at Array.forEach (<anonymous>)↵    at Object.use (http://127.0.0.1:10000/umi.dll.js:46271:23)↵    at Object../app/web/src/pages/.umi/umi.js (http://127.0.0.1:10000/umi.js:12485:9)↵    at __webpack_require__ (http://127.0.0.1:10000/umi.js:772:30)↵    at fn (http://127.0.0.1:10000/umi.js:130:20)↵    at Object.0 (http://127.0.0.1:10000/umi.js:240883:18)↵    at __webpack_require__ (http://127.0.0.1:10000/umi.js:772:30)↵    at http://127.0.0.1:10000/umi.js:948:37↵    at http://127.0.0.1:10000/umi.js:951:10"
__proto__: Error