please help

[BlackMody]

Manifest merger failed : uses-sdk:minSdkVersion 21 cannot be smaller than version 23 declared in library [com.github.ismaeldivita:chip-navigation-bar:1.4.0] C:\Users\Lenovo.gradle\caches\transforms-3\7c99e935c45c6b9333337459fc28ffef\transformed\chip-navigation-bar-1.4.0\AndroidManifest.xml as the library might be using APIs not available in 21
Suggestion: use a compatible library with a minSdk of at most 21,
or increase this project's minSdk version to at least 23,
or use tools:overrideLibrary="com.ismaeldivita.chipnavigation" to force usage (may lead to runtime failures)