[DevTools Bug] Cannot add node "20468" because a node with that id is already in the Store. about react

[GlennAtCallinetic]

I encountered the same issue because I had installed the React Developer Tools extension twice, likely from two different sources. Removing one of them resolved the issue for me.

[neeraj03788]

Hey I am not getting your issue could you brief that?

[NigeAtAnd]

I've seen it a few times now, developing a React Native Expo app using Expo Go. I reload the app with DevTools open and I get this error.

Uncaught Error: Cannot add node "1734" because a node with that id is already in the Store.
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The error was thrown at http://192.168.0.66:8081/_expo/react-devtools/standalone.js:2:1011371
    at f.emit (http://192.168.0.66:8081/_expo/react-devtools/standalone.js:2:984358)
    at http://192.168.0.66:8081/_expo/react-devtools/standalone.js:2:985900
    at http://192.168.0.66:8081/_expo/react-devtools/standalone.js:2:1359186
    at Array.forEach (<anonymous>)
    at U_.e.onmessage (http://192.168.0.66:8081/_expo/react-devtools/standalone.js:2:1359169)

Refreshing DevTools doesn't help.

MacOS Sonoma 14.7
DevTools 5.2.0-1717ab0171
Chrome 129.0.6668.101 x86_64
react 18.2.0
react-native 0.74.5
expo 51.0.37

from react.

[piecdar]

Uncaught Error: Cannot add node "330" because a node with that id is already in the Store.
The error was thrown emit@moz-extension://bbac5ce7-5760-41c7-8624-0d264d68a0c7/build/main.js:1:1141200
v/this._wallUnlisten<@moz-extension://bbac5ce7-5760-41c7-8624-0d264d68a0c7/build/main.js:1:1142807
bridgeListener@moz-extension://bbac5ce7-5760-41c7-8624-0d264d68a0c7/build/main.js:1:1552360

[mikaiyl]

MacOS Sonoma 14.6.1
Edge Version 128.0.2739.79 (Official build) (x86_64)
DevTools 6.0.0-d66fa02a30
react 18.3.1

Uncaught Error: Cannot add node "236" because a node with that id is already in the Store.
Dismiss
The error was thrown at chrome-extension://gpphkfbcpidddadnkolkpfckpihlkkil/build/main.js:1:1171894
at v.emit (chrome-extension://gpphkfbcpidddadnkolkpfckpihlkkil/build/main.js:1:1141200)
at chrome-extension://gpphkfbcpidddadnkolkpfckpihlkkil/build/main.js:1:1142807
at bridgeListener (chrome-extension://gpphkfbcpidddadnkolkpfckpihlkkil/build/main.js:1:1552574)

[eps1lon]

We fixed some scenarios where this could occur in React DevTools 7.0. If this issue still persists, please open a new issue.