Please delete the mode files and install it again.
It works perfectly.
Install instructions
1) Delete framework folder at Hitman 3\Runtime\Framework
2) Delete all modes
3) Delete file chunk0patch100.rpkg from Hitman 3\Runtime
4) Download Mod Framework 1.3
5) Download Unofficial content pack based on Offline Elusives Ver...
6) Download Mirror: content pack for ALL OFFLINE ESCALATIONS A...
7) Download HITMAN 3 Offline Scoring Mod
8) Download HITMAN 3 Poisonous Item Pack
9) Place the framework folder at Hitman 3\Runtime\Framework
10) Optional: Copy mods that support the framework into the framework folder. Mods can consist of one or multiple folders that start with a number. You can also delete the offline content registration mod "2 Offline Content" if you don't want it.
11) Double-click on "Install or Update" / "Install or Update.bat". You should see a black window with some progress information and, if everything went well, a confirmation message.
You seem to either have a broken rpkg file or a mod using an older version of rpkg.
Verify the game files using Epic games. If that does not help, test if removing other mods helps. If you tell me the name of the conflicting mod I might be able to fix this in future versions. As a workaround, a patch level above 100 might work if you patched your packagedefinition.txt.framework-original.