There is no argument given that corresponds to the required formal parameter 'b' of 'NormalAttack.Use(CharacterBase, int, IEnumerable<Buff>, bool)'

'Skill.SkillInfo' does not contain a definition for 'Target' and no accessible extension method 'Target' accepting a first argument of type 'Skill.SkillInfo' could be found (are you missing a using directive or an assembly reference?)

There is no argument given that corresponds to the required formal parameter 'b' of 'NormalAttack.Use(CharacterBase, int, IEnumerable<Buff>, bool)'

There is no argument given that corresponds to the required formal parameter 'b' of 'NormalAttack.Use(CharacterBase, int, IEnumerable<Buff>, bool)'

There is no argument given that corresponds to the required formal parameter 'b' of 'NormalAttack.Use(CharacterBase, int, IEnumerable<Buff>, bool)'

'Skill.SkillInfo' does not contain a definition for 'Target' and no accessible extension method 'Target' accepting a first argument of type 'Skill.SkillInfo' could be found (are you missing a using directive or an assembly reference?)

There is no argument given that corresponds to the required formal parameter 'b' of 'NormalAttack.Use(CharacterBase, int, IEnumerable<Buff>, bool)'

There is no argument given that corresponds to the required formal parameter 'b' of 'NormalAttack.Use(CharacterBase, int, IEnumerable<Buff>, bool)'

Process completed with exit code 1.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Possible null reference return.

Possible null reference return.