When i was trying to clear all the stone to have more space, this showed up:
"An unhandled exception occured. This error is in your game's log, please report this here"
and there is from the log:
[19:43:43] [Render thread/INFO]: [CHAT] [Baritone] > sel replace stone air
[19:43:43] [Render thread/INFO]: [CHAT] [Baritone] An unhandled exception occurred. The error is in your game's log, please report this at https://github.com/cabaletta/baritone/issues
is there any way to fix it?

I'd guess you have to update your Baritone version.
You are probably using Baritone v1.8.1 or v1.8.2 on Minecraft 1.18.2.