真机信息：
iPhone:12.5.6 uni-app: 3.6.4
报错信息如下：
Weex exception errCode: -9700 function: func: createInstance arg:start message: [WX_KEY_EXCEPTION_WXBRIDGE] exception: ReferenceError: Can't find variable: BigInt64Array
stack:app-service.js:272:18
webpack_require@app-service.js:85:34
eval code
eval@[native code]
app-service.js:232:5
webpack_require@app-service.js:85:34
checkDeferredModules@app-service.js:46:42
webpackJsonpCallback@app-service.js:33:39
global code@app-service.js:223:71
[WX_KEY_EXCEPTION_WXBRIDGE] exception: ReferenceError: Can't find variable: BigInt64Array
stack:app-service.js:272:18
webpack_require@app-service.js:85:34
eval code
eval@[native code]
app-service.js:232:5
webpack_require@app-service.js:85:34
checkDeferredModules@app-service.js:46:42
webpackJsonpCallback@app-service.js:33:39
global code@app-service.js:223:71
