C-c o not work in Tramp mode show message "crux-open-with: Wrong type argument: stringp, nil"

[futurist]

Tramp mode to /ssh:host:/root, then M-x term open terminal mode window, then want to change to other window using key C-c o(the prefix changed to C-c in term mode instead of C-x), throw error message:

crux-open-with: Wrong type argument: stringp, nil

The issue related to bbatsov/crux#61

See also: https://www.gnu.org/software/emacs/manual/html_node/emacs/Term-Mode.html

[stale]

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