[DevTools Bug] Cannot read properties of undefined (reading 'length')

[Vatsal0410]

Website or app

on localhost

Repro steps

How often does this bug happen?

Sometimes

DevTools package (automated)

react-devtools-extensions

DevTools version (automated)

6.1.5-5d87cd2244

Error message (automated)

Cannot read properties of undefined (reading 'length')

Error call stack (automated)

at ProfilingCache_defineProperty.commitIndex (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1224203)
    at he.getFlamegraphChartData (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1224614)
    at CommitFlamegraphAutoSizer (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1473032)
    at renderWithHooks (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:66690)
    at updateFunctionComponent (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:96942)
    at beginWork (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:110959)
    at performUnitOfWork (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:182534)
    at workLoopSync (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:182390)
    at renderRootSync (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:182174)
    at performWorkOnRoot (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:177634)

Error component stack (automated)

at CommitFlamegraphAutoSizer (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1472789)
    at div (<anonymous>)
    at div (<anonymous>)
    at div (<anonymous>)
    at SettingsModalContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1363197)
    at chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1604868
    at va (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1380724)
    at div (<anonymous>)
    at div (<anonymous>)
    at ThemeProvider (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1383435)
    at chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1383632
    at div (<anonymous>)
    at div (<anonymous>)
    at div (<anonymous>)
    at ThemeProvider (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1383435)
    at InspectedElementContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1394502)
    at TimelineContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1461901)
    at ProfilerContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1453632)
    at TreeContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1275115)
    at SettingsContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1303162)
    at ModalDialogContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1440740)
    at DevTools_DevTools (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1612679)

GitHub query string (automated)

https://api.github.com/search/issues?q=Cannot read properties of undefined (reading 'length') in:title is:issue is:open is:public label:"Component: Developer Tools" repo:facebook/react

[jaimeag]

It's hard to really tell what the issue is here when the reproduction steps is just a call stack of bundled code. Can you provide a more detailed list of reproduction steps?

[Littledevil7]

you can give the possible code snippet for better diagnosis.

[asiftonim]

lkjh