After upgrading android build:gradle:4.0.0 shows me Unresolved class name error in proguard.
-keep class rx.** { *; } // unresolve
-keep class org.apache.** {*;} // unresolve
-keep class org.apache.http.** { *; } // unresolve
-keep class org.apache.james.mime4j.** { *; } // unresolve
-dontwarn retrofit2.Platform$Java8 // error at $ sign
So how to fix these errors, thanks.