after testing i found out mobs are not droping items because of deap learner from Hostile Neural Networks had broke data models

The same here, Wither and dragon are broken.

Same issue.
If you run /hostilenetworks datafix_all there is a difference in how color is represented which might be causing the issue:

Using warden as an example.
New: "name_color": "#05343F",
Old: "name_color": "0x05343F",

Gonna try replacing the kubejs files with the generated outputs and see if that fixes it.

Replacing the files with the new files generated by running the command did indeed fix the issue.

Just thought I'd mention that #962 mentioned the fix, which is in PR #959 and I can confirm that making the changes to the files in kubejs/data/hostilenetworks/data_models fixes the issue