TypeError: this.provider.on is not a function

[bscaspar]

Every time an OpenSea embedded NFT loads (using <nft-card/>) it throws this error:

Uncaught (in promise) TypeError: this.provider.on is not a function
    at HTMLElement.connectedCallback (nft-card.ts:203:19)

As you can see from the screenshot this happens multiple times for a single NFT.

Does anyone monitor or maintain this repo?