invokedynamic requires --min-sdk-version >= 26

Question

Today downloaded the studio 3.0 beta 2.0 version, after that tried to open an existing project in it and faced some difficulties, most of them I could solve with the help of

Answer 1

I added a library with the compileOptions Java 1.8, and In my main project dont. Fixed adding:

compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}