Le Nuage Magique

1) Check the prosody version needed for share component :

https://prosody.im/doc/modules/mod_http_file_share

For exemple, Available starting with 0.12.0.

2) Check your prosody package version:

sudo apt policy prosody

You might have this kind of result:

prosody:
  Installed: 0.12.3-1
  Candidate: 0.12.3-1
  Version table:
 *** 0.12.3-1 500
        500 https://deb.debian.org/debian bookworm/main arm64 Packages
        100 /var/lib/dpkg/status

Now we gonna see if you are lucky or not :

1) If candidate have a version who fit the needed by the package, you are lucky. You just need to do sudo apt update and sudo apt upgrade.