Starting point [Oopsie] Not getting the reverse shell

HTB Content Challenges
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1

I managed to upload the file with my ip and the default port “1234”:

But when I try the curl I get this:

Anyone knows what am i doing wrong or how can i solve this problem?

SOLVED:
It was an ufw problem solved with this:
ufw allow from 10.10.10.28 proto tcp to any port 1234

2

I do not get how this fixed it for you.