console error about ipfs.io

[guotao]

There is error in console

WebSocket connection to 'wss://node1.preload.ipfs.io/p2p/XXXXX' failed:

So why it need to connect to ipfs? is'nt it a p2p ?

[tabcat]

These are preload nodes which just cache content on the network. There are a few of them that the ipfs instance automatically connects to if a default flag is set.

So why it need to connect to ipfs? is'nt it a p2p ?

It's not needed and the app should still work just fine without any of these.
Connection errors being logged are not uncommon and usually don't mean anything is broken.