{"record":{"id":"a7bb645098240edc","repo":"facebook/react","slug":"unable-to-obtain-serialized-value-for-element-i","errorCode":null,"errorMessage":"Unable to obtain serialized value for element \"${id}\"","messagePattern":"Unable to obtain serialized value for element \"(.+?)\"","errorType":"console","errorClass":null,"httpStatus":null,"severity":"warning","filePath":"packages/react-devtools-shared/src/backend/agent.js","lineNumber":423,"sourceCode":"      renderer.clearWarningsForElementID(id);\n    }\n  };\n\n  copyElementPath: CopyElementParams => void = ({\n    id,\n    path,\n    rendererID,\n  }: CopyElementParams) => {\n    const renderer = this._rendererInterfaces[rendererID];\n    if (renderer == null) {\n      console.warn(`Invalid renderer id \"${rendererID}\" for element \"${id}\"`);\n    } else {\n      const value = renderer.getSerializedElementValueByPath(id, path);\n\n      if (value != null) {\n        this._bridge.send('saveToClipboard', value);\n      } else {\n        console.warn(`Unable to obtain serialized value for element \"${id}\"`);\n      }\n    }\n  };\n\n  deletePath: DeletePathParams => void = ({\n    hookID,\n    id,\n    path,\n    rendererID,\n    type,\n  }: DeletePathParams) => {\n    const renderer = this._rendererInterfaces[rendererID];\n    if (renderer == null) {\n      console.warn(`Invalid renderer id \"${rendererID}\" for element \"${id}\"`);\n    } else {\n      renderer.deletePath(type, id, hookID, path);\n    }\n  };","sourceCodeStart":405,"sourceCodeEnd":441,"githubUrl":"https://github.com/facebook/react/blob/eafeac097ba51e1eab809c07102126bd5f8e5425/packages/react-devtools-shared/src/backend/agent.js#L405-L441","documentation":"In copyElementPath, after the renderer lookup succeeds, DevTools asks the renderer to serialize the value at the chosen path via getSerializedElementValueByPath(id, path). If that returns null — the path no longer resolves (the element re-rendered or unmounted, hook state changed shape) or the value cannot be serialized for the clipboard — DevTools warns `Unable to obtain serialized value for element \"X\"` and sends nothing to saveToClipboard, so no copy happens.","triggerScenarios":"Invoking copy on a property whose cached path is stale because the inspected element re-rendered between inspection and the copy action; copying from a partially inspected/dehydrated tree where the path was never fully hydrated.","commonSituations":"Copying state or props while the app updates in the background; stale inspection cache after Fast Refresh; very deep or large values that were pruned from the inspected payload.","solutions":["Re-select the element (or re-expand the subtree) to refresh inspected paths, then copy again.","Expand the value fully before copying so its path is completely hydrated.","Update React DevTools if stale paths after re-renders reproduce frequently.","If it persists on current versions, report it with the value shape — serialization gaps are treated as DevTools bugs."],"exampleFix":null,"handlingStrategy":"validation","validationCode":"// Embedder-side: verify a serializable value exists before offering 'copy'.\nconst value = renderer.getSerializedElementValueByPath(id, path);\nif (value != null) {\n  bridge.send('saveToClipboard', value);\n} else {\n  // refresh inspection (re-select element) instead of copying\n}","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Re-select the element to refresh inspected paths before copying.","Fully expand large/deep values so their paths are hydrated in the inspected payload.","Copy quickly after inspecting, before the element re-renders and invalidates paths.","Report persistent cases with the value shape — serialization gaps are DevTools bugs."],"tags":["react-devtools","clipboard","serialization","devtools"],"backgroundTag":"value-serialization-failed","analyzedSha":"eafeac097ba51e1eab809c07102126bd5f8e5425","analyzedAt":"2026-08-21T22:01:08.818Z","schemaVersion":2},"datasetVersion":"2026-08-21T23:17:16.201Z"}