{"record":{"id":"340c4504cc7cd0c4","repo":"BabylonJS/Babylon.js","slug":"bufferview-bufferview-not-found-in-buffermanage","errorCode":null,"errorMessage":"BufferView ${bufferView} not found in BufferManager.","messagePattern":"BufferView (.+?) not found in BufferManager\\.","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"packages/dev/serializers/src/glTF/2.0/bufferManager.ts","lineNumber":184,"sourceCode":"        const bufferView = this._accessorToBufferView.get(accessor);\n        this._verifyBufferView(bufferView);\n        return bufferView!;\n    }\n\n    public getPropertiesWithBufferView(bufferView: IBufferView): IPropertyWithBufferView[] {\n        this._verifyBufferView(bufferView);\n        this._bufferViewToProperties.set(bufferView, this._bufferViewToProperties.get(bufferView) ?? []);\n        return this._bufferViewToProperties.get(bufferView)!;\n    }\n\n    public getData(bufferView: IBufferView): TypedArrayForglTF {\n        this._verifyBufferView(bufferView);\n        return this._bufferViewToData.get(bufferView)!;\n    }\n\n    private _verifyBufferView(bufferView?: IBufferView): void {\n        if (bufferView === undefined || !this._bufferViewToData.has(bufferView)) {\n            throw new Error(`BufferView ${bufferView} not found in BufferManager.`);\n        }\n    }\n}\n","sourceCodeStart":166,"sourceCodeEnd":188,"githubUrl":"https://github.com/BabylonJS/Babylon.js/blob/0592b347b8a4ee0236089ea86a749cacfdb266d8/packages/dev/serializers/src/glTF/2.0/bufferManager.ts#L166-L188","documentation":"_verifyBufferView asserts that a given IBufferView was actually registered in this BufferManager's _bufferViewToData map. If the bufferView is undefined or was never created through this manager, any dependent call (getData, createAccessor, setBufferView, getPropertiesWithBufferView) throws. It catches accessing buffers from a different glTF export/session than the one that produced them.","triggerScenarios":"Calling getData(bufferView) or createAccessor with an IBufferView object obtained from another BufferManager instance, a bufferView captured before its data was written, or passing undefined after a failed/optional creation step.","commonSituations":"Mixing buffer managers across multiple simultaneous glTF exports; holding bufferView references from a previous export attempt that was reset; a pipeline bug where setBufferView was skipped for one accessor.","solutions":["Only use IBufferView instances returned by the same BufferManager you are calling into","Ensure every bufferView passed to accessors was produced via this manager's buffer-view creation API in the current export session","Guard call sites: check the bufferView is defined before passing it, and re-create it if the manager was reset"],"exampleFix":"// before\nconst accessor = managerA.createAccessor(...);\nlaterData = managerB.getData(accessor.bufferView!); // throws\n// after\nconst accessor = managerA.createAccessor(...);\nlaterData = managerA.getData(accessor.bufferView!);","handlingStrategy":"type-guard","validationCode":"if (!bufferView) throw new Error(\"bufferView is undefined; accessor creation skipped\");\n// keep a per-manager set of created views:\nif (!createdViews.has(bufferView)) throw new Error(\"bufferView belongs to another BufferManager\");","typeGuard":"function belongsToManager(bv: IBufferView | undefined, m: BufferManager): bv is IBufferView {\n  return bv !== undefined && m.getBufferView(bv) !== undefined;\n}","tryCatchPattern":"try {\n  const data = manager.getData(bufferView);\n} catch (e) {\n  if (String(e.message).startsWith(\"BufferView\")) {\n    logger.error(\"stale/foreign bufferView; re-creating in current export session\", e);\n    // recreate via manager's buffer-view API before retrying\n  } else throw e;\n}","preventionTips":["Use exactly one BufferManager per export session; never mix instances","Always obtain bufferViews from the same manager you later query","Re-create buffer views after any export reset instead of caching old references"],"tags":["gltf","buffer","state","export"],"backgroundTag":"unregistered-buffer-view","analyzedSha":"0592b347b8a4ee0236089ea86a749cacfdb266d8","analyzedAt":"2026-08-30T15:11:20.442Z","schemaVersion":2},"datasetVersion":"2026-08-30T18:17:15.746Z"}