Hi M0ROJ,
This log message originates here in the code for parsing the transmitter priorities. So apparently your transmitter priority file is malformed.
Feel free to post your transmitter prority file if you can’t find the syntax error and I’ll have a look.
Sincerely,
Fabian
PS: Please avoid all-bold messages in forum posts. Instead to separate code from text you can create a code block by enclosing the code section with lines of three backticks (more details and a short example on helpful markdown tutorial page).