The icon is not available
Install the image file of the icon in "/server/oxide/data/LustyMap" and put it in but it shows "NOImage" in the game
Did you install it in the wrong place?

And how do you bind the map to the M key?
Icons were able to be used.
You can wipe the server data to display them.

But I still don't know how to key bind them.
You must install the icons in the oxide\data\lustymap\custom folder. The CUSTOM folder is for any icons/pics you like to use.

Merged post

I am currently using it myself.
there is no option to associate the M key on the keyboard with the opening of LustyMap. This has been removed as it probably wasn't working due to the multiple up-to-date Facepunch muses. This issue has already been resolved in an old post.
If you guys like to add a keybind, this has to be done from every player directly. They can simply add a bind in the F1 console.
I don't find link for .psd file and i used icon from lustymap but map say always missing icon. I have tested different names and editing config etc but is not working. Lusty map integration not working.