What are the Versions? Please run the following command and post output:
$ dpkg -l indi-bin indi-gphoto libgphoto2\*
A working config on Astroberry is (last tried a few weeks back, due to clouds) is:
||/ Name Version Architektur Beschreibung
+++-=======================-============-============-==========================
ii indi-bin 1.9.2-1 armhf INDI server, drivers and t
ii indi-gphoto 3.0-8 armhf INDI GPhoto (DSLR) Camera
ii libgphoto2-6:armhf 2.5.27 armhf gphoto2 digital camera lib
ii libgphoto2-port12:armhf 2.5.27 armhf gphoto2 digital camera por