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Your build is running with Java 1.8 and you tell it to output Java 11 bytecode. That cannot work. I would recommend looking into toolchains also: https://docs.gradle.org/current/userguide/toolchains.html

but why my build is 1.8 ? I have changed it to 11 everywhere before build

as long as you are not using toolchains you will also have to make sure that you actually start the gradle process with JDK in version 11

Hi Louis, Lars Thank you ! I find the cause. It was JDK 1.8 in gradle configuration as default. I solved it by adding JDK 11 path into gradle.properties