An error occurred in Firefox Profiler: TypeError: can't access dead object.

[kemingy]

I encountered this error with the following web console output:

TypeError: can't access dead object
    componentDidUpdate UrlManager.js:248
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[react-dom.production.min.js:188:119](webpack:///node_modules/react-dom/cjs/react-dom.production.min.js)
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An unhandled error was thrown in a React component. TypeError: can't access dead object
    componentDidUpdate UrlManager.js:248
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Cm@https://profiler.firefox.com/main.cbf4af26c4d9555531ea.bundle.js:104:7034
c@https://profiler.firefox.com/main.cbf4af26c4d9555531ea.bundle.js:2:23947
div
YT@https://profiler.firefox.com/main.cbf4af26c4d9555531ea.bundle.js:137:121599
c@https://profiler.firefox.com/main.cbf4af26c4d9555531ea.bundle.js:2:23947
Lf@https://profiler.firefox.com/main.cbf4af26c4d9555531ea.bundle.js:111:15372
Uf
de@https://profiler.firefox.com/main.cbf4af26c4d9555531ea.bundle.js:2:16873
ce@https://profiler.firefox.com/main.cbf4af26c4d9555531ea.bundle.js:2:16786
dI@https://profiler.firefox.com/main.cbf4af26c4d9555531ea.bundle.js:137:170141
c@https://profiler.firefox.com/main.cbf4af26c4d9555531ea.bundle.js:2:23947
st@https://profiler.firefox.com/main.cbf4af26c4d9555531ea.bundle.js:2:22211
Lf@https://profiler.firefox.com/main.cbf4af26c4d9555531ea.bundle.js:111:15372
Of
mI@https://profiler.firefox.com/main.cbf4af26c4d9555531ea.bundle.js:137:171233 [ErrorBoundary.js:43:12](webpack:///src/components/app/ErrorBoundary.js)
    componentDidCatch ErrorBoundary.js:43
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[julienw]

Interesting error, could you share also some more context ? What action were you doing ? Do you reproduce this reliably ? Thanks!

The error seems to happen in

profiler/src/components/app/UrlManager.js

Line 248 in 6a8c668

window.history.pushState(urlState, document.title, newUrl);

.

[julienw]

I wonder if the InvalidStateError of #5060 might be related as well.

[kemingy]

Interesting error, could you share also some more context ? What action were you doing ? Do you reproduce this reliably ? Thanks!

I visited the profiler page where the data was generated by samply. I shut down the local samply server and then clicked some frames on the flamegraph page.

Sadly, I didn't encounter this error later.