You can see the problem in the job log:

févr. 18 19:26:04 NAFABox indiserver[17439]: 2021-02-18T18:26:04: bind: Address already in use
févr. 18 19:26:04 NAFABox indiserver[17439]: Child process 17444 died
févr. 18 19:26:04 NAFABox indiserver[17439]: 2021-02-18T18:26:04: good bye

There is an indiserver instance already running. To stop it, call
sudo killall indiserver
You could also try to stop the service:
sudo service indi-weatherradio stop


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