# Summary <!--Describe the bug in short here. Describe what happens that is considered bad behaviour.--> When trying to build the project through the CLI with java 17, I get an error stating source compatibility is 21. When switching to jdk21 this error is resolved. # Steps to reproduce <!--Describe the steps required to reproduce the bug. An enumeration with screenshots is preferred to be able to easily reproduce.--> 1. Setup jdk17 2. run `./gradlew build --info` # Possible Fix <!--If you have a suspicion of what might be wrong, describe what you think is going wrong.--> Either update the README to indicate java 21 is required, or update the source compatibility down to java 17 # Logs <!--Logs can be added if you find a bug and already have a log output to show.--> <!--In case you do, please copy the log between the code tags below.--> <description><code> ``` ... > Task :compileJava FAILED Custom actions are attached to task ':compileJava'. Caching disabled for task ':compileJava' because: Build cache is disabled Task ':compileJava' is not up-to-date because: Task has failed previously. The input changes require a full rebuild for incremental task ':compileJava'. Compilation mode: in-process compilation Full recompilation is required because no incremental change information is available. This is usually caused by clean builds or changing compiler arguments. Compiling with toolchain '/nix/store/xy53lk4001h814d7dwh8f52wcqxrn7rp-openjdk-17.0.11+9/lib/openjdk'. Compiling with JDK Java compiler API. FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':compileJava'. > error: invalid source release: 21 ``` </code></description>