Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex distributed systems where failure is inevitable.
The version of the Gradle wrapper you are using may not be supported (unsupported range is 3.5 to 4.0) so you may have to update by at least one minor version for support.
See: https://github.com/gradle/wrapper-validation-action