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
sudo killall indiserver
sudo service indi-weatherradio stop