Hi @jerrify ! The immediate problem looks to be a bug related to terminal color detection. Your report is great and gives enough information to fix it, which I’ll get started on.
Until then, you could try running with a different terminal emulation that supports colors. If you’re still running into difficulty, what is the output of echo $TERM;tput colors ?
xref: Panic in `cursive` dependency · Issue #3595 · mimblewimble/grin · GitHub