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The remapper plugin requires Java 8. It used to be this version of java was automatically instlaled by older runners (Ubuntu 24.04), but now when it compiles under Ubuntu 26.04 Java 8 isn't installed. Manually request it be installed to fix those builds
reusteur73
approved these changes
Oct 31, 2026
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The forge remapper plugin requires Java 8. It used to be this version of java was automatically instlaled by older runners (Ubuntu 24.04), but now when it compiles under Ubuntu 26.04 Java 8 isn't installed. Manually request Java 8 to be installed to fix those builds.
I also had a Java 8 issue when I first tested the gradle upgrade. Didn't really pay any mind to the fact that the workflow wasn't asking for it to be installed. But seems like it is required to manually deal with it now.