'server down 1' problem for Mac

My Couchbase just shows ‘server down 1’ in 'cluster view 'page and all server nodes are pending.
Basically I can’t do anything about it.
I’ve tried uninstall - install method.
Please help me.

Try shutting it down and following the recommendations about removing data between uninstall/reinstall in the documentation. If you have important data there, back it up with another utility first.

If you’ve already done that, then you may want to give an indication of what version of MacOS and Couchbase you’re using.