Port urls are indexed

Hi, So my website www.example.com is indexed which is fine, but the staging url which is in port 3002, (www.example.com:3002) is also indexed.

All the pages under port 3002 were also indexed it is causing duplication issue.

Can someone help me with this situation? How do I deindex only port urls. Thank you

submitted by /u/rpaim8
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