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@L_Duperval is correct – LinkedIn does this on purpose.
There are some possible workarounds mentioned, which suggests including proper values for the HTTP request headers “accept”, “accept-encoding”, “accept-language”, and “user-agent”.
For more information and details on possible workarounds, see
- php - How to avoid "HTTP/1.1 999 Request denied" response from LinkedIn? - Stack Overflow
- Why is LinkedIn API returning "999: request failed" message? - Stack Overflow
- php - 999 Error Code on HEAD request to LinkedIn - Stack Overflow
- python - HTTP Error 999: Request denied - Stack Overflow
- python - 999 response when trying to crawl LinkedIn with Scrapy - Stack Overflow
I also mentioned an alternative in the linked thread that @L_Duperval posted, which is to use an existing unofficial LinkedIn API on RapidAPI that already does the scraping for you.
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
P.S.: Did you know, the concepts of about 70% of questions asked on this forum are already covered in the Make Academy. Investing some effort into it will save you lots of time and frustration using Make later!