Progaurd a échoué après la mise à jour de la bibliothèque de support à 26.0.1

Question

J'ai mis à jour mon support lib vers 26.0.1, mais la version release a échoué. journaux

Note: there were 3 references to unknown classes. 
     You should check your configuration for typos. 
     (http://proguard.sourceforge.net/manual/troubleshooting.html#unknownclass) 
Note: there were 63 unkept descriptor classes in kept class members. 
     You should consider explicitly keeping the mentioned classes 
     (using '-keep'). 
     (http://proguard.sourceforge.net/manual/troubleshooting.html#descriptorclass) 
Note: there were 29 unresolved dynamic references to classes or interfaces. 
     You should check if you need to specify additional program jars. 
     (http://proguard.sourceforge.net/manual/troubleshooting.html#dynamicalclass) 
Note: there were 1 class casts of dynamically created class instances. 
     You might consider explicitly keeping the mentioned classes and/or 
     their implementations (using '-keep'). 
     (http://proguard.sourceforge.net/manual/troubleshooting.html#dynamicalclasscast) 
Warning: there were 30 unresolved references to classes or interfaces. 
     You may need to add missing library jars or update their versions. 
     If your code works fine without the missing classes, you can suppress 
     the warnings with '-dontwarn' options. 
     (http://proguard.sourceforge.net/manual/troubleshooting.html#unresolvedclass) 
Warning: there were 1 unresolved references to program class members. 
     Your input classes appear to be inconsistent. 
     You may need to recompile the code. 
      :purplleAndroid:transformClassesAndResourcesWithProguardForRelease FAILED 

Ne pas comprendre en raison de laquelle la bibliothèque progaurd est un échec.

progaurd file

app level build.gradle

Error log

Answer 1

Il Soutenons pas question bibliothèque, I à l'aide bibliothèque appelée branch.io, je suis ajouté c'est la dépendance fin avec "+". Il est mis à jour et que a quelques règles progaurd.