Persian Gulf. New mission. Looking at the dcs.log found this:

[TEMPEST.114]

2023-01-05 01:49:44.569 ERROR   Lua::Config (Main): Call error world.onEvent:[string "Scripts/UI/RadioCommandDialogPanel/Config/Common/ATC.lua"]:640: Airbase doesn't exist
stack traceback:
    [C]: ?
    [C]: in function 'getCommunicator'
    [string "Scripts/UI/RadioCommandDialogPanel/Config/Common/ATC.lua"]:640: in function 'onEvent'
    [string "Scripts/UI/RadioCommandDialogPanel/RadioCommandDialogsPanel.lua"]:1497: in function 'onEvent'
    [string "Scripts/World/EventHandlers.lua"]:13: in function <[string "Scripts/World/EventHandlers.lua"]:11>.
 

It didn't crash my game, but I've no idea what/why this is appearing