One of my customer is using Amazon Corretto instead of the Oracle JVM.
We did a rollout of the new HCAA 3.0.4 and could see that some Java Classes could not be loaded because of the following error:

There´s an official technote about this problem: https://bit.ly/2Ra9s8P
So if you want to use HCAA and you’re using Web Service calls or Java agents, either use another JVM or ask your developer to modify the used procedures.
Feel free to vote for supporting Amazon Corretto inside HCAA at https://bit.ly/3hwf8op.