i just want to make it clear to anyone who has encountered this problem that the offending line in:
on my RaspberryPi 3 B+ using OS buster 10 was:
when the line is corrected it should look like:
when restarting Fldigi the file fldigi_def.xml was not read so,
i reboot the RaspberryPi to ensure the file fldigi_def.xml
was read by the FlDigi program.