Cloud build : SpritePacker failed to get types from Accessibility


I’m trying to build an app on Android and iOS with Unity 2018.3.9.
When I build locally, I only have a log (not a warning nor an error) saying

SpritePacker failed to get types from Accessibility, Version=, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a. Error: Exception of type 'System.Reflection.ReflectionTypeLoadException' was thrown.

But when I try to build on the cloud, the log become an error (and yet it still builds successfully)
Anyone has met the same problem ?

Well the error stopped appearing on the cloud build recently (went fro 2018.3.11 to 2018.3.13) but it’s still showing in the Unity’s log