{"agent":"claude","input":"A Sentry alert fired for this React app; its payload follows this prompt. Use the Sentry connection to read the issue, its latest event, the breadcrumbs and the in-app stack frames. Match the frames to the source under packages/excalidraw, starting with exportCanvas in data/index.ts, clipboard.ts and data/blob.ts. Add a Vitest test beside the existing ones, clipboard.test.ts or tests/export.test.tsx, using the helpers in tests/helpers/api.ts, that reproduces the error. Fix the code until `yarn vitest run` passes for that file, then run `yarn test:typecheck`, `yarn test:code` and `yarn test:app`. Open a pull request that links the Sentry issue, quotes the frames and the failing test output, and explains the cause. Do not add the error to ignoreErrors in excalidraw-app/sentry.ts. Change nothing unrelated to this error.\n\nAlert payload:\n{payload}","resources":[{"url":"https://github.com/your-org/your-app"}],"connections":["sentry"]}