总是出现这个报错,undefined is not an object (evaluating 'a.payload.subtype')

请问怎么调试?

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undefined is not an object (evaluating 'a.payload.subtype')

o@https://lib/WASubContext.js:2:340683

i@https://lib/WASubContext.js:2:341353

onTimeoutError@https://lib/WASubContext.js:2:341485

handleCommonError@https://lib/WASubContext.js:2:345633

https://lib/WASubContext.js:2:341379

https://lib/WASubContext.js:2:109551

https://lib/WASubContext.js:2:109652

https://lib/WASubContext.js:2:108594

T@https://lib/WASubContext.js:2:66976

l@https://lib/WASubContext.js:2:108386

handleWatchEstablishmentError@https://lib/WASubContext.js:2:340180

https://lib/WASubContext.js:2:337482

https://lib/WASubContext.js:2:109551

https://lib/WASubContext.js:2:109652

r@https://lib/WASubContext.js:2:108474

t@https://lib/WASubContext.js:2:65850

https://lib/WASubContext.js:2:65972

e@https://lib/WASubContext.js:2:68428

https://lib/WASubContext.js:2:32641

r@https://lib/WASubContext.js:2:32340

https://lib/WAServiceMainContext.js:2:124303

https://lib/WASubContext.js:2:92786

https://lib/WASubContext.js:2:99036