E4049#
Compiler diagnostic name: pkg_magic_mismatch.
Magic number mismatch for the package file.
This means your local build files are corrupted or outdated. First try
update/reinstall your MoonBit installation as in our Download
Page. Then try to run moon clean
or remove the target directory manually and build again. If the error
persists, please submit a bug report here:
This package-loading diagnostic has no checked source example because producing it depends on stale or incompatible internal build artifacts rather than ordinary source code.