Whenever I try to equip something (Dragoon DMR/Dragoon LMG) in the right arm slot, the whole texture for the mech disappears and I get this error:

Exception setting up dynamic nodes for : System.MissingMethodException: Constructor on type 'Exosuit.PawnRenderNode_WeaponHolder' not found.
[Ref E799FD3E]
at System.RuntimeType.CreateInstanceImpl (System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder binder, System.Object[] args, System.Globalization.CultureInfo culture, System.Object[] activationAttributes, System.Threading.StackCrawlMark& stackMark) [0x0022b] in <51fded79cd284d4d911c5949aff4cb21>:0
at System.Activator.CreateInstance (System.Type type, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder binder, System.Object[] args, System.Globalization.CultureInfo culture, System.Object[] activationAttributes) [0x0009c] in <51fded79cd284d4d911c5949aff4cb21>:0
at System.Activator.CreateInstance (System.Type type, System.Object[] args) [0x00000] in <51fded79cd284d4d911c5949aff4cb21>:0
at Verse.DynamicPawnRenderNodeSetup_Apparel+<ProcessApparel>d__5.MoveNext () [0x0008b] in <fcfab19af5d14a608a65ebd77f29482f>:0
at Verse.DynamicPawnRenderNodeSetup_Apparel+<GetDynamicNodes>d__3.MoveNext () [0x001a4] in <fcfab19af5d14a608a65ebd77f29482f>:0
at Verse.PawnRenderTree.SetupDynamicNodes () [0x0006d] in <fcfab19af5d14a608a65ebd77f29482f>:0
- POSTFIX Fortified: Void Fortified.PawnRenderTree_SetupDynamicNodes_Patch:Postfix(PawnRenderTree __instance)
- POSTFIX ExosuitMod: Void Exosuit.PawnRenderTree_Apparel_Patch:PostSetupApparelTags(Pawn ___pawn, PawnRenderTree __instance)
at Verse.PawnRenderTree.TrySetupGraphIfNeeded () [0x0007a] in <fcfab19af5d14a608a65ebd77f29482f>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Log.Error_Patch1 (string)
Verse.PawnRenderTree:TrySetupGraphIfNeeded ()
Verse.PawnRenderTree:EnsureInitialized (Verse.PawnRenderFlags)
Exosuit.Building_MaintenanceBay:DynamicDrawPhaseAt (Verse.DrawPhase,UnityEngine.Vector3,bool)
Verse.Thing:DynamicDrawPhase (Verse.DrawPhase)
Verse.DynamicDrawManager:DrawDynamicThings ()
Verse.Map:MapUpdate ()
Verse.Game:UpdatePlay ()
Verse.Root_Play:Update ()

any idea why this happens? Happens even when I disabled all my other mods that aren't related