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TypeError: null is not an object (evaluating 'a.apply') at instrumentMethod.js
See original GitHub issueWe’re seeing this error in Safari mainly. I think the issue is in this line.
let instrumentation = instrumentationFactory(original)
If original is not a function then instrumentation is undefined. The error message from the title occurs when instrumentation.apply is called on this line.
That’s my understanding. Not sure which functions are not working in Safari. I found the following calls in the code base so I’m guessing it’s one of these:
instrumentMethodAndCallOriginal(window, ‘onerror’ ...
instrumentMethodAndCallOriginal(window, 'onunhandledrejection' ...
instrumentMethodAndCallOriginal(history, 'pushState' ...
instrumentMethodAndCallOriginal(history, 'replaceState' ...
instrumentMethodAndCallOriginal(XMLHttpRequest.prototype, 'open' ...
instrumentMethodAndCallOriginal(XMLHttpRequest.prototype, 'send' ...
instrumentMethodAndCallOriginal(XMLHttpRequest.prototype, 'abort' ...
Let me know if I can provide any more info.
Issue Analytics
- State:
- Created 2 years ago
- Reactions:1
- Comments:8
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Hello @karhidle,
it seems to be a duplicate of #1570 for which a fix will be available in the next release (hopefully this week). You can follow #1570 to be notified about the resolution.
We are also experiencing this issue. Using version
4.17.1.Same experience as @kbgreenlight described, errors happen after xhr requests. @bcaudan could you reopen this issue for further investigation?