[@vercel/blob] – BlobUnknownError and how to catch it?

[mfts]

Hi, I'm getting unknown errors from vercel/blob randomly. I cannot pinpoint why that error occurs.

Error: BlobUnknownError: Vercel Blob: Unknown error, please visit https://vercel.com/help
    at validateBlobApiResponse (/Users/mfts/dev/mfts/papermark/node_modules/@vercel/blob/dist/chunk-L5YSJHMQ.cjs:47:13)
    at put (/Users/mfts/dev/mfts/papermark/node_modules/@vercel/blob/dist/chunk-L5YSJHMQ.cjs:140:11)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async __WEBPACK_DEFAULT_EXPORT__ (webpack-internal:///(api)/./pages/api/mupdf/convert-page.ts:46:22)

It's happening in this file:

• in L27: fetch the blob from blob url and convert to arrayBuffer
• in L40: upload a new file to blob

My suspicion is that the put in L40 fails somehow.

Would appreciate your help to better understand how to prevent/catch this error.

[vvo]

@mfts Would you be open to creating a small reproduction repository that would contain everything for us to run it? That would be awesome.

[mfts]

@vvo I'll try to get to it over the weekend. But it's not a deterministic error. Sometimes the same file doesn't work the first time and then works the second time or vice versa.

[luismeyer]

hey @mfts,
it's been a while since you opened this issue. Are you still seeing random errors on put requests?
We just released @vercel/blob@0.19.0 which adds automatic retries for all blob API requests. This could solve your issue, because it was likely caused by internal request problems to our upstream provider.

It would be great if you could let us know if the issue still persists

[mfts]

Sorry for sleeping on this issue. I have actually not experienced this issue recently. Thanks for following up with a new blob release.

closing this issue