The JSON file is not well structured.

Try this version:

{

"names": {

"colter": "40780861346c29c28fc0d398ff9961fe04516f270dbe3b48b16664c64622f820",

"_": "40780861346c29c28fc0d398ff9961fe04516f270dbe3b48b16664c64622f820"

},

"relays": {

"40780861346c29c28fc0d398ff9961fe04516f270dbe3b48b16664c64622f820": [

"wss://nostr.cltrrd.us"

]

}

}