Beacon send by "exec" cmd doenst work after a while

[dl7ata]

I am using a script for beaconing:
beacon timeout 20 exec /home/pi/APRS/aprs_eddt.sh
After a certain amount of time (some days or more), the result of the script is no more recognized by APRX, the grabbed for the beacontext is empty. I have to restart the application and everything went well again.
The output of the bash script is proofed/working reliable.

[dl7ata]

exec II:
Also on another Band beaconing with exec doesn't work.
My current workaround is a monthly restart of aprx via crontab.