Failled to build with Java 11

processing-bot

Created by: knupel

My terminal explain to me I need Java 1.8 to build this version is weird or not ?
/Users/stan/En_cours/code/github/PROCESSING_and_CO/processing4/build/build.xml:57: Unsupported Java version: 11.0.4. To build, make sure that Java 8 (aka Java 1.8) is installed.