Hello,
after I deleted bitbucket from known_hosts, the following error appears, I tried many tutorials but it didn't work.
saya juga sudah mencoba
1) To remove duplicates entries:
ssh-keygen -R bitbucket.org && sed -i.old -e '/AAAAB3NzaC1yc2EAAAABIwAAAQEAubiN81eDcafrgMeLzaFPsw2kNvEcqTKl/d' ~/.ssh/known_hosts && curl https://bitbucket.org/site/ssh >> ~/.ssh/known_hosts
2) To add new entries:
curl https://bitbucket.org/site/ssh >> ~/.ssh/known_hosts
3) To test if works:
ssh git@bitbucket.org host_key_info
but still can't run

I hope help to solve the problem, thank you