error in refresh(): bad arguement #1 to 'getValue' (string expected, got nil)

[jlt206]

Radiomaster TX16S MKII with lateset firmware V2.11.1 "Jolly Mon" and a MATEK mLRS MAVLink 2.4GHz TX Module KIT, mR24-30-TX as an external module with V1.3.6 Frimware.

Works after first install, but the I get this error and can't see the interfrace.

On boot up of the radio, I see the interface once and then it dissapears.