After changing gradle to version: 3.4.1 (classpath ‘com.android.tools.build:gradle:3.4.1’), I now get this error:
In details:
Duplicate class org.hamcrest.BaseDescription found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.BaseMatcher found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.CoreMatchers found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.Description found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.Factory found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.Matcher found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.SelfDescribing found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.StringDescription found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.core.AllOf found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.core.AnyOf found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.core.DescribedAs found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.core.Is found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.core.IsAnything found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.core.IsEqual found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.core.IsInstanceOf found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.core.IsNot found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.core.IsNull found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.core.IsSame found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.internal.ArrayIterator found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.internal.SelfDescribingValue found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Duplicate class org.hamcrest.internal.SelfDescribingValueIterator found in modules hamcrest-core-1.1.jar (org.hamcrest:hamcrest-core:1.1) and junit-4.10.jar (junit:junit:4.10)
Go to the documentation to learn how to Fix dependency resolution errors.