Minecraft Version

1.20.1

Mod Loader and Version

Forge 47.2.20

Ad Astra! Version

1.15.5

Addon Mod Version (This Mod)

6.8

The details

So i just start my minecraft and my game crashes, crash report didn't loads but i have latest log. Without this mod all works fine and loads.

Latest log - https://pastebin.com/i1e2RqpL
list of installed mods:

The log says:

[19:57:12] [main/ERROR]: Missing or unsupported mandatory dependencies:
	Mod ID: 'ad_astra', Requested by: 'ad_astra_giselle_addon', Expected range: '[1.15.18,)', Actual version: '1.15.5'

Please update Ad Astra.
Else downgrade this mod.