Unresolved reference,Cannot access class


i am using android studio 3.2.1 and kotlin 1.2.71

classpath ‘com.android.tools.build:gradle:3.2.1’
classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.2.71

for almost time whenever i build project getting below errors with respect to kotlin classes name and object references
exa : class DelUserIP
Unresolved reference: DelUserIP
: Cannot access class ‘input.DelUserIP’. Check your module classpath for missing or conflicting dependencies

but after error if i build project once again it will be success build without error after some build i experiencing same above error…