[]构建好android studio项目后，debug出错

I/LayaBox: alert=undefined:5155: SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
let runtime = json.props.runtime;
^^^
SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
at eval (native)
at Document._downloadOk (apploader.js:6059:20)
at apploader.js:6038:20
at FileReader.filereader.onload (apploader.js:6732:47)
>>>>>>>>>>>>>>>evalhttp://stand.alone.version/libs/laya.ui.js
I/ViewRootImpl: CPU Rendering VSync enable = true
I/LayaBox: alert=undefined:5155: SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
let runtime = json.props.runtime;
^^^
SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
at eval (native)
at Document._downloadOk (apploader.js:6059:20)
at apploader.js:6038:20
at FileReader.filereader.onload (apploader.js:6732:47)
I/LayaBox: >>>>>>>>>>>>>>>evalhttp://stand.alone.version/libs/laya.ui.js
I/LayaBox: alert=undefined:5155: SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
let runtime = json.props.runtime;
^^^
SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
at eval (native)
at Document._downloadOk (apploader.js:6059:20)
at apploader.js:6038:20
at FileReader.filereader.onload (apploader.js:6732:47)
I/ViewRootImpl: CPU Rendering VSync enable = true
I/LayaBox: >>>>>>>>>>>>>>>evalhttp://stand.alone.version/libs/laya.ui.js
I/LayaBox: alert=undefined:5155: SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
let runtime = json.props.runtime;
^^^
SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
at eval (native)
at Document._downloadOk (apploader.js:6059:20)
at apploader.js:6038:20
at FileReader.filereader.onload (apploader.js:6732:47)
>>>>>>>>>>>>>>>evalhttp://stand.alone.version/libs/laya.ui.js