This issue arose when trying to launch Papyrus on OpenJDK:
code signature in (/usr/local/Cellar/openjdk/15.0.1/libexec/openjdk.jdk/Contents/MacOS/libjli.dylib) not valid for use in process using Library Validation: mapped file has no cdhash, completely unsigned? Code has to be at least ad-hoc signed.
A brute force solution is to disable security assessment completely with sudo spctl --master-disable.