How to fix error: WebSocket is already in CLOSING or CLOSED state


Some errors you can see:

Example 1:

Example 2:

Example 3:

How to fix this error?

If you use socket.io, use version 2.0.3

npm i socket.io@2.0.3

If you use ws, use version from 0.4.25 to 0.4.32

npm i ws@0.4.32

You can try with other versions.

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