I'm having trouble with sqlcl 20.4 and jdk 15.0.2 or jdk 1.8.0.211. sqlcl ist starting, but when i try to CONN it fails. I had an older version running (19.x i did not know exactly) and this version connects with both jdk but with jdk 15.0.2 i got a java error while doing a select * from v$instance. 19.x with jdk 1.8.0.211 seems to work. Where could i get an older version of sqlcl?