如题，无论是我自己引入的echarts，还是用echarts的官方dome，手机端和开发者工具都没问题，就是PC端不行，报错。

发布体验版测试也不行。

报错如下：

VM13:2 MiniProgramError
Cannot read property 'getContext' of null
TypeError: Cannot read property 'getContext' of null
    at t.eval (weapp:///utils/ec-canvas/ec-canvas.js:156:30)
    at Function.eval (eval at n.call.document (http://127.0.0.1:35334/remote-debug/runtime.js?devtools_ignore=true:1:14662), <anonymous>:2:1797421)
    at <SelectorQuery callback function>
    at eval (eval at n.call.document (http://127.0.0.1:35334/remote-debug/runtime.js?devtools_ignore=true:1:14662), <anonymous>:2:109783)
    at eval (eval at n.call.document (http://127.0.0.1:35334/remote-debug/runtime.js?devtools_ignore=true:1:14662), <anonymous>:2:1797583)
    at Array.forEach (<anonymous>)
    at eval (eval at n.call.document (http://127.0.0.1:35334/remote-debug/runtime.js?devtools_ignore=true:1:14662), <anonymous>:2:1797555)
    at eval (eval at n.call.document (http://127.0.0.1:35334/remote-debug/runtime.js?devtools_ignore=true:1:14662), <anonymous>:2:1796881)
    at eval (eval at n.call.document (http://127.0.0.1:35334/remote-debug/runtime.js?devtools_ignore=true:1:14662), <anonymous>:2:2733913)
    at v (eval at n.call.document (http://127.0.0.1:35334/remote-debug/runtime.js?devtools_ignore=true:1:14662), <anonymous>:2:2635767)

奇怪的是！echarts的官方线上dome竟然可以。

各位大佬有没有解决方案？谢谢