'web connect timeout' error as soon as 'Connected to gateway server'

[managuli]

Tested for rtc-sdk version: 3.0.0 and above.
Chrome latest version.
Agora account type: testing

When I try to join the channel, I get warning:
Agora-SDK [WARNING]: handleSendError

Then sdk keeps on reattempting connection until web socket times out.

While the sdk state changes to and fro:
{"type":"connection-state-change","prevState":"CONNECTING","curState":"CONNECTED"}
and
{"type":"connection-state-change","prevState":"DISCONNECTED","curState":"CONNECTING"}

[plutoless]

which network are you using? 4g or wifi? are you using a corporate network?