Cannot find keymap "x"

Problem

On IDE startup, error message "Cannot find keymap x" appears

Cause

Some keymaps are system-specific, such as Windows, Mac or KDE keymaps. If you enabled Setting Sync among different OSes, this could cause using wrong keymap as a "system" one

Resolution

1. Disable Settings Sync for keymaps. (Go to "Settings | Setting sync" and disable the "Keymap" option)
2. Select the correct (existing) keymap in "Settings | Keymap"