An unexpected solution to websocket 403 errors

What I can find on the Internet does not match my situation.
According said on the Internet, I can't solve it. I

accidentally googled this http://stackoverflow.com/questions/32874421/websocket-in-spring-boot-app-getting-403-forbidden

Get inspired to upgrade the version of spring to 4.1.7 and upgrade the version of websocket to 4.1.7 at the same time to solve the 403 error miraculously

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