For a temp fix you can:

In client main.lua - Comment out lines 62,63,64,73

In server main.lua comment out 15,16,17,18

— Seems to be an issue with this code

SERVER
activeUnits[xPlayer.identifier] = {
cid = xPlayer.identifier,
callSign = xPlayer.meta[‘callsign’],
firstName = xPlayer.meta.user.firstname,
lastName = xPlayer.meta.user.lastname,
radio = 0,
unitType = xPlayer.job.name,
duty = true
}

CLIENT

RegisterNetEvent(‘esx:playerLoaded’, function(xPlayer)
PlayerData = xPlayer
callSign = PlayerData.meta and PlayerData.meta.callsign or ‘000’
end)