Error sending event to widget: Unknown or unsupported action: send_event

[jaller94]

Steps to reproduce

1. We use a spanner 🔧 widget to avoid working on the same system at once.
2. It sets a state event and posts a message every time someone takes or drops a spanner.

Outcome

What did you expect?

No error

What happened instead?

A console error whenever I take or drop the spanner.

Operating system

Manjaro Linux

Browser information

Firefox Developer 97

URL for webapp

staging.element.io

Application version

Element version: 1.9.10-rc.2, Olm version: 3.2.8

Homeserver

vector.modular.im

Will you send logs?

No

[jryans]

@jaller94 Can you share the source of the widget?

[jaller94]

The widget is: https://github.com/Half-Shot/matrix-spanner-widget

Wild guesses for relevant code bits, based on variable names, without knowing how this works:

• https://github.com/Half-Shot/matrix-spanner-widget/blob/69e10affeec19cd0eb2bc89c8647842130d8425e/src/index.tsx#L62
• https://github.com/matrix-org/matrix-widget-api/blob/5b328036df446af6b5fa2d145c957e0905e63c2b/src/interfaces/WidgetApiAction.ts#L27

[jryans]

@jaller94 This appears to be an artefact of the current matrix-widget-api contract as hinted in the docs: it currently expects you to call ev.preventDefault() and send a reply for any event you process.

Personally, I find this to be a somewhat surprising API expectation, as it leads to extra error messages like this, even though the widget has actually processed the data anyway. I filed matrix-org/matrix-widget-api#53 to discuss possibly changing that contract for the general case.

To resolve this for the spanner widget, either you can wait to see the outcome of that general API contract change, or the spanner widget could be altered to follow the current contract.

Either way, the changes wouldn't happen in Element Web directly, so I'll close this issue.