Error when press 'g' key
### Expected behavior.

When "g" key is pressed its showing error:-
 
Error detected while processing function SpaceVim#mapping#guide#start_by_prefix:
line    1:                                                                                                                             
E5108: Error executing lua vim/_editor.lua:0: function SpaceVim#mapping#guide#start_by_prefix[1]..script nvim_exec2() called at SpaceVi
m#mapping#guide#start_by_prefix:1: Vim(unlet):E108: No such variable: "g:leaderGuide#displayname"                                      
stack traceback:                                                                                                                       
        [C]: in function 'nvim_exec2'                                                                                                  
        vim/_editor.lua: in function 'cmd'                                                                                             
        /home/sandeep/.SpaceVim//lua/spacevim/plugin/guide.lua:136: in function 'format_displaystring'                                 
        /home/sandeep/.SpaceVim//lua/spacevim/plugin/guide.lua:270: in function 'start_parser'                                         
        /home/sandeep/.SpaceVim//lua/spacevim/plugin/guide.lua:818: in function 'start_by_prefix'                                      
        [string ":lua"]:1: in main chunk   

### The reproduce ways from Vim starting.

A bug happened!

### Output of the `:SPDebugInfo!`

_No response_