Unity bolt ludiq error

my unity version is : 2020.3.15f2 my bolt version : Version 1.4.15 - April 02, 2021 when i add flow machine component unity give me this error in console:

at System.MonoCustomAttrs.GetCustomAttributes (System.Reflection.ICustomAttributeProvider obj, System.Type attributeType, System.Boolean inherit) [0x002b3] in :0 at System.RuntimeType.GetCustomAttributes (System.Type attributeType, System.Boolean inherit) [0x00038] in :0 at System.Attribute.GetCustomAttributes (System.Reflection.MemberInfo element, System.Boolean inherit) [0x00052] in :0 at Ludiq.AttributeUtility+AttributeCache…ctor (System.Reflection.MemberInfo element) [0x0002c] in Ludiq.Core.Runtime\Reflection\AttributeUtility.cs:56 UnityEngine.Debug:LogWarning (object) Ludiq.AttributeUtility/AttributeCache:.ctor (System.Reflection.MemberInfo) (at Ludiq.Core.Runtime/Reflection/AttributeUtility.cs:66) Ludiq.AttributeUtility:GetAttributeCache (System.Reflection.MemberInfo) (at Ludiq.Core.Runtime/Reflection/AttributeUtility.cs:266) Ludiq.AttributeUtility:HasAttribute (System.Reflection.MemberInfo,bool) (at Ludiq.Core.Runtime/Reflection/AttributeUtility.cs:337) Ludiq.SingleDecoratorProvider3/<>c:b__9_0 (System.Type) (at Ludiq.Core.Editor/Decorators/SingleDecoratorProvider.cs:59) System.Linq.Enumerable/WhereEnumerableIterator1:MoveNext () Ludiq.SingleDecoratorProvider3:MapAttributeTypes () (at Ludiq.Core.Editor/Decorators/SingleDecoratorProvider.cs:59) Ludiq.SingleDecoratorProvider3:.ctor () (at Ludiq.Core.Editor/Decorators/SingleDecoratorProvider.cs:23) Ludiq.SerializedPropertyProviderProvider:.ctor () Ludiq.SerializedPropertyProviderProvider:.cctor () (at Ludiq.Core.Editor/SerializedProperties/SerializedPropertyProviderProvider.cs:37) Ludiq.InspectorProvider:CustomPropertyDrawerInspector (System.Type) (at Ludiq.Core.Editor/Inspection/InspectorProvider.cs:148) Ludiq.InspectorProvider:ResolveDecoratorType (System.Type) (at Ludiq.Core.Editor/Inspection/InspectorProvider.cs:42) Ludiq.SingleDecoratorProvider3:TryGetDecoratorType (System.Type,System.Type&) (at Ludiq.Core.Editor/Decorators/SingleDecoratorProvider.cs:87) Ludiq.SingleDecoratorProvider3:GetDecoratorType (System.Type) (at Ludiq.Core.Editor/Decorators/SingleDecoratorProvider.cs:106) Ludiq.InspectorProvider:HasInspector (System.Type) (at Ludiq.Core.Editor/Inspection/InspectorProvider.cs:158) Ludiq.InspectorProvider:GetDecoratedType (Ludiq.Metadata) (at Ludiq.Core.Editor/Inspection/InspectorProvider.cs:31) Ludiq.SingleDecoratorProvider3:CreateDecorator (Ludiq.Metadata) (at Ludiq.Core.Editor/Decorators/SingleDecoratorProvider.cs:42) Ludiq.SingleDecoratorProvider3:GetDecorator (Ludiq.Metadata) (at Ludiq.Core.Editor/Decorators/SingleDecoratorProvider.cs:253) Ludiq.XInspectorProvider:Inspector (Ludiq.Metadata) (at Ludiq.Core.Editor/Inspection/InspectorProvider.cs:174) Ludiq.LudiqGUI:GetInspectorHeight (Ludiq.Inspector,Ludiq.Metadata,single,UnityEngine.GUIContent) (at Ludiq.Core.Editor/Interface/LudiqGUI.cs:76) Bolt.AssemblyOptionsPage:OnContentGUI () (at Bolt.Flow.Editor/Windows/AssemblyOptionsPage.cs:38) Ludiq.Page:smile:rawContent () (at Ludiq.Core.Editor/Windows/Page.cs:70) Ludiq.Wizard:OnGUI () (at Ludiq.Core.Editor/Windows/Wizard.cs:106) Ludiq.WrappedEditorWindow:OnGUI () (at Ludiq.Core.Editor/Windows/WrappedEditorWindow.cs:51) UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

Same here! no idea how to fix it.