Hello,
Since I updated Playmaker in my project (I didn't do an update for a long time), I have a warning (yellow alert in the console) :
Assets/PlayMaker/Editor/PlayMakerBuildCallbacks.cs(33,18): warning CS0618: `UnityEditor.Build.IPreprocessBuild' is obsolete: `Use IPreprocessBuildWithReport instead'
I'm working in Unity 2018.2.21