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Websocket error - Parse live sync

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We recently moved from Cloudfare to Akamai and started seeing below error -

ParseLiveQuery: WebSocket did disconnect with error: Optional(Starscream.WSError(type: Starscream.ErrorType.upgradeError, message: "Invalid HTTP upgrade", code: 403)

Websockets are enabled in Akamai but still I am getting this error.

Here is my environment details

Server

Parse Server version: 4.3.0, Operating system: Ubuntu 18.04, Remote host: Heroku

Database

System: MongoDB, Database version: 4.4.13, Remote host: MongoDB Atlas

Client

SDK: iOS, SDK version: ParseLiveQuery 2.7.2

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