Veeam Agent Linux 6 failed install on Debian 11

Hello, 

I try to install Veeam Agent for Linux on my debian 11

but i have two errors that involve failure of Veeam Agent for linux installation 

20/09/2023 09:41:17 Failed [172.16.0.18] Failed to install veeam_6.0.0.1060_amd64.deb and blksnap_6.0.0.1060_all.deb packages: E: Impossible de trouver le paquet linux-headers-5.10.0-18-amd64 E: Impossible de trouver de paquet correspondant à l'expression rationnelle « linux-headers-5.10.0-18-amd64 » E: Impossible de trouver de paquet correspondant à l'expression rationnelle « linux-headers-5.10.0-18-amd64 » Failed to invoke rpc command  0:00:14
 

20/09/2023 09:41:32 Failed [172.16.0.18] Failed to install Veeam Agent for Linux: E: Impossible de trouver le paquet linux-headers-5.10.0-18-amd64 E: Impossible de trouver de paquet correspondant à l'expression rationnelle « linux-headers-5.10.0-18-amd64 » E: Impossible de trouver de paquet correspondant à l'expression rationnelle « linux-headers-5.10.0-18-amd64 » Failed to invoke rpc command  
 

my config was 

   Static hostname: SRV-011-VM
         Icon name: computer-vm
           Chassis: vm
        Machine ID: 7efafdd7383246bb9c7405635d2c5dd0
           Boot ID: 2a8c229952db4555a1bff9a8558c24b5
    Virtualization: microsoft
  Operating System: Debian GNU/Linux 11 (bullseye)
            Kernel: Linux 5.10.0-18-amd64
      Architecture: x86-64
PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"
NAME="Debian GNU/Linux"
VERSION_ID="11"
VERSION="11 (bullseye)"
VERSION_CODENAME=bullseye
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"
-bash: rpm : commande introuvable
ii  linux-headers-5.10.0-25-amd64         5.10.191-1                       amd64        Header files for Linux 5.10.0-25-amd64
ii  linux-headers-5.10.0-25-common        5.10.191-1                       all          Common header files for Linux 5.10.0-25
ii  linux-headers-amd64                   5.10.191-1                       amd64        Header files for Linux amd64 configuration (meta-package)
ii  linux-image-5.10.0-18-amd64           5.10.140-1                       amd64        Linux 5.10 for 64-bit PCs (signed)
ii  linux-image-5.10.0-25-amd64           5.10.191-1                       amd64        Linux 5.10 for 64-bit PCs (signed)
ii  linux-image-5.9.0-4-amd64             5.9.11-1                         amd64        Linux 5.9 for 64-bit PCs (signed)
ii  linux-image-amd64                     5.10.191-1                       amd64        Linux for 64-bit PCs (meta-package)
-bash: dkms : commande introuvable
SecureBoot disabled
mokutil --list-new is empty

find /lib/modules -name '*veeam*' -exec ls -ld {} + empty result

root@SRV-011-VM:~# modprobe -vvv veeamsnap
modprobe: INFO: ../libkmod/libkmod.c:365 kmod_set_log_fn() custom logging function 0x5616599026f0 registered
modprobe: DEBUG: ../libkmod/libkmod-index.c:757 index_mm_open() file=/lib/modules/5.10.0-18-amd64/modules.dep.bin
modprobe: DEBUG: ../libkmod/libkmod-index.c:757 index_mm_open() file=/lib/modules/5.10.0-18-amd64/modules.alias.bin
modprobe: DEBUG: ../libkmod/libkmod-index.c:757 index_mm_open() file=/lib/modules/5.10.0-18-amd64/modules.symbols.bin
modprobe: DEBUG: ../libkmod/libkmod-index.c:757 index_mm_open() file=/lib/modules/5.10.0-18-amd64/modules.builtin.alias.bin
modprobe: DEBUG: ../libkmod/libkmod-index.c:757 index_mm_open() file=/lib/modules/5.10.0-18-amd64/modules.builtin.bin
modprobe: DEBUG: ../libkmod/libkmod-module.c:556 kmod_module_new_from_lookup() input alias=veeamsnap, normalized=veeamsnap
modprobe: DEBUG: ../libkmod/libkmod-module.c:562 kmod_module_new_from_lookup() lookup modules.dep veeamsnap
modprobe: DEBUG: ../libkmod/libkmod.c:595 kmod_search_moddep() use mmaped index 'modules.dep' modname=veeamsnap
modprobe: DEBUG: ../libkmod/libkmod-module.c:566 kmod_module_new_from_lookup() lookup modules.symbols veeamsnap
modprobe: DEBUG: ../libkmod/libkmod-module.c:570 kmod_module_new_from_lookup() lookup install and remove commands veeamsnap
modprobe: DEBUG: ../libkmod/libkmod-module.c:574 kmod_module_new_from_lookup() lookup modules.aliases veeamsnap
modprobe: DEBUG: ../libkmod/libkmod.c:434 kmod_lookup_alias_from_alias_bin() use mmaped index 'modules.alias' for name=veeamsnap
modprobe: DEBUG: ../libkmod/libkmod-module.c:578 kmod_module_new_from_lookup() lookup modules.builtin.modinfo veeamsnap
modprobe: DEBUG: ../libkmod/libkmod.c:444 kmod_lookup_alias_from_alias_bin() file=/lib/modules/5.10.0-18-amd64/modules.builtin.alias.bin name=veeamsnap
modprobe: DEBUG: ../libkmod/libkmod-module.c:582 kmod_module_new_from_lookup() lookup modules.builtin veeamsnap
modprobe: DEBUG: ../libkmod/libkmod.c:500 lookup_builtin_file() use mmaped index 'modules.builtin' modname=veeamsnap
modprobe: DEBUG: ../libkmod/libkmod-module.c:589 kmod_module_new_from_lookup() lookup veeamsnap=0, list=(nil)
modprobe: FATAL: Module veeamsnap not found in directory /lib/modules/5.10.0-18-amd64
 

Idon’t understand why installed failed Debian update and ugrade was clean 

Someone Know ?