Web wallet failed sync - Failed sync doesn't show error (but shows the sync progress bar)

[voidsculptorart]

Linked to issue "Web wallet failed sync - Failed sync leads to a hung sync": #3227

Description
When the web wallet can't sync with the node and gets an internal server error from the node, the wallet doesn't show an error (but shows the sync progress bar).

Steps To Reproduce
When the web wallet tries to sync with the node, the node must return an internal server error to the web wallet.

Error Screenshots
The "Failed sync" error popped up:

After clicking the Resync button, the following error pops up in the dev console:

After continuing in the dev console, the progress bar hangs permanently:

Expected Behaviour
The "Failed sync" error message (like above) should be shown again because the client received an error from the node:

Platform
Brave desktop browser (normal tab, not private)

[ascartabelli]

See my answer here on the other issue.
The point is that the sync process didn't receive any error, otherwise the status would be the one you show in the last screenshot.

Keeping this open for now, but I'm seeing this as a duplicate of #3227 right now.

[ascartabelli]

Closing as duplicate of #3227