toeverything/AFFiNE · error

Error fetching embed:

Error message

Error fetching embed:

What it means

Warning logged in the Notion HTML adapter when fetching the asset behind a Notion embed URL fails (network error, missing asset entry, or non-ok response). The embed's blob is not resolvable so the embed block is exported without its resolved content; conversion of the rest of the document continues.

Source

Thrown at blocksuite/affine/blocks/attachment/src/adapters/notion-html.ts:67

            while (embededURLSplit.length > 0) {
              const key = assets
                .getPathBlobIdMap()
                .get(decodeURIComponent(embededURLSplit.join('/')));
              if (key) {
                blobId = key;
                break;
              }
              embededURLSplit.shift();
            }
            const value = assets.getAssets().get(blobId);
            if (value) {
              name = getAssetName(assets.getAssets(), blobId);
              size = value.size;
              type = value.type;
            }
          } else {
            const res = await fetch(embededURL).catch(error => {
              console.warn('Error fetching embed:', error);
              return null;
            });
            if (!res) {
              return;
            }
            const resCloned = res.clone();
            name =
              getFilenameFromContentDisposition(
                res.headers.get('Content-Disposition') ?? ''
              ) ??
              (embededURL.split('/').at(-1) ?? 'file') +
                '.' +
                (res.headers.get('Content-Type')?.split('/').at(-1) ?? 'blob');
            const file = new File([await res.blob()], name, {
              type: res.headers.get('Content-Type') ?? '',
            });
            size = file.size;
            type = file.type;

View on GitHub (pinned to b4c8548c09)

Solutions

1. Check the embed URL is reachable; retry the fetch.
2. Handle the fetch failure by skipping the embed.

When it happens

Trigger: Triggered when the Notion HTML adapter fails to fetch an embedded asset URL while importing a Notion-exported HTML archive, so the attachment is skipped.

Common situations: Occurs during Notion import when external embed URLs are unreachable or blocked by network/CORS. Re-import with the asset files included in the export archive or check network access.

AI-assisted analysis of toeverything/AFFiNE@b4c8548c09 (2026-08-18). Data as JSON: /api/errors/c38c5aca258a5490. Report an issue: GitHub.