If you plan on auto-upgrading your OpenJDK to version 1.8.0_242, please be aware of the following commit :
It introduced a regression on the loading of Native Libraries into the JDK.
ARender uses native library loading to process PDFs. Thus, using this particular version, ARender would fail to load.
Version 4.0.9 and up of ARender will support this new change from the OpenJDK and you’ll be able to safely upgrade your OpenJDK to this revision.