from--https://stackoverflow.com/questions/58679774/expected-android-api-level-21-but-was-19-while-using-retrofit-2-okhttp3 Ask Question Asked 3 years, 10 months ago Modified 3 years, 6 months ago Viewed 7k times 2 I'm using Retrofit 2 and OkHttp3 to data from server and I get error while using Min_SDK 17 and my device's API is 17 also I tried this answer :How to fix Expect…