presence provider has no subscribe(); peers will never appear.

Warnings reference › presence.subscribe

Identifier

presence.subscribe

Raised by

The grid (core)

Since

1.4.0

What happened

The presence provider does not implement subscribe, which is how peers are delivered. Nothing is subscribed, so no peer ever appears and the presence UI stays empty however many people are on the document.

The fix

Implement subscribe(handler) on the provider.

Reference

Covered in full at the API reference.