Couldn't Progress After Squash Commit - Learn Git By Bulding an SQL Reference Object: Build an SQL Reference Object

I’m at 83% progress and the lesson instructed me to squash two commits. I did it as instructed but when i pressed “ctrl + x” then “enter” and then “y”, the nano didn’t quit and it showed like in this picture

I tried to exit the nano but the lesson doesn’t progress. When i checked the git log, it already squashed two commits as instructed. I tried resetting the lesson and even restart browser but the nano showed like the picture again every time i squashed two commits as instructed. What should i do?

Hi! have you resolved the issue? can you please share the solution?