Tout à fait. Je suis passé sous stretch uniquement pour voir si la version de debian pouvait avoir un impact sur mon problème.
Launch install of camera dependancy
Hit:1 http://archive.raspberrypi.org/debian stretch InRelease
Get:2 http://raspbian.raspberrypi.org/raspbian stretch InRelease [15.0 kB]
Hit:3 https://packages.sury.org/php stretch InRelease
Fetched 15.0 kB in 2s (5706 B/s)
Reading package lists...
Reading package lists...
Building dependency tree...
Reading state information...
ffmpeg is already the newest version (7:3.2.14-1~deb9u1+rpt1).
0 upgraded, 0 newly installed, 0 to remove and 22 not upgraded.
Reading package lists...
Building dependency tree...
Reading state information...
libav-tools is already the newest version (7:3.2.14-1~deb9u1+rpt1).
0 upgraded, 0 newly installed, 0 to remove and 22 not upgraded.
Reading package lists...
Building dependency tree...
Reading state information...
python-imaging is already the newest version (4.0.0-4+deb9u1).
0 upgraded, 0 newly installed, 0 to remove and 22 not upgraded.
Reading package lists...
Building dependency tree...
Reading state information...
python-pil is already the newest version (4.0.0-4+deb9u1).
0 upgraded, 0 newly installed, 0 to remove and 22 not upgraded.
Reading package lists...
Building dependency tree...
Reading state information...
The following additional packages will be installed:
php7.4-gd
The following NEW packages will be installed:
php-gd php7.4-gd
0 upgraded, 2 newly installed, 0 to remove and 22 not upgraded.
Need to get 29.7 kB of archives.
After this operation, 105 kB of additional disk space will be used.
Get:1 https://packages.sury.org/php stretch/main armhf php7.4-gd armhf 7.4.3-1+0~20200220.11+debian9~1.gbpe23899 [23.4 kB]
Get:2 https://packages.sury.org/php stretch/main armhf php-gd all 2:7.4+73+0~20200221.21+debian9~1.gbp29416a [6278 B]
debconf: unable to initialize frontend: Dialog
debconf: (Dialog frontend will not work on a dumb terminal, an emacs shell buffer, or without a controlling terminal.)
debconf: falling back to frontend: Readline
debconf: unable to initialize frontend: Readline
debconf: (This frontend requires a controlling tty.)
debconf: falling back to frontend: Teletype
dpkg-preconfigure: unable to re-open stdin:
Fetched 29.7 kB in 0s (36.5 kB/s)
Selecting previously unselected package php7.4-gd.
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(Reading database ... 72081 files and directories currently installed.)
Preparing to unpack .../php7.4-gd_7.4.3-1+0~20200220.11+debian9~1.gbpe23899_armhf.deb ...
Unpacking php7.4-gd (7.4.3-1+0~20200220.11+debian9~1.gbpe23899) ...
Selecting previously unselected package php-gd.
Preparing to unpack .../php-gd_2%3a7.4+73+0~20200221.21+debian9~1.gbp29416a_all.deb ...
Unpacking php-gd (2:7.4+73+0~20200221.21+debian9~1.gbp29416a) ...
Processing triggers for libapache2-mod-php7.4 (7.4.3-1+0~20200220.11+debian9~1.gbpe23899) ...
Setting up php7.4-gd (7.4.3-1+0~20200220.11+debian9~1.gbpe23899) ...
debconf: unable to initialize frontend: Dialog
debconf: (Dialog frontend will not work on a dumb terminal, an emacs shell buffer, or without a controlling terminal.)
debconf: falling back to frontend: Readline
Creating config file /etc/php/7.4/mods-available/gd.ini with new version
Setting up php-gd (2:7.4+73+0~20200221.21+debian9~1.gbp29416a) ...
Processing triggers for libapache2-mod-php7.4 (7.4.3-1+0~20200220.11+debian9~1.gbpe23899) ...
Everything is successfully installed!