Code42 Crashplan fails on Fedora 30

Note that this topic is different from:

In my case, not even the background daemon will start.

I tried installing Crashplan 6.8.8, 6.8.7, and an older 6.7 release on my Fedora 30 laptop, and none of them are functional.

The Crashplan installer downloads its own JRE environment and uses it, but it always fails with the same messsage (reformatted for readability):

[05.15.19 11:15:12.155 WARN  main         backup42.common.config.AppConfig] Problem reading my config xml!
  - myConfigFile=/usr/local/crashplan/conf/my.service.xml, java.lang.NoClassDefFoundError:
  Could not initialize class com.code42.jna.openssl.MD5DigestOpenSSL,
  com.code42.exception.DebugException: Problem reading my config xml! - 
  myConfigFile=/usr/local/crashplan/conf/my.service.xml, java.lang.NoClassDefFoundError:
  Could not initialize class com.code42.jna.openssl.MD5DigestOpenSSL
  STACKTRACE:: com.code42.exception.DebugException: Problem reading my config xml! - 
  myConfigFile=/usr/local/crashplan/conf/my.service.xml, java.lang.NoClassDefFoundError:
  Could not initialize class com.code42.jna.openssl.MD5DigestOpenSSL

I tried modifying the install.vars file, specifying different java executables (openjdk versions 1.8.0, 11, and 12), and all of them fail with the above message. I’m wondering if anybody got this to work…?

Oh, and the GUI? That just crashes with a segmentation fault, which I believe is the result of building against an outdated Electron release.