Hello everyone,
in master [1] and 4.1 [2] branches, meaningful (de-obfuscated) GWT/Java stack traces are now available right after Engine installation or upgrade.
There's no need to install the complementary "debuginfo" packages anymore. In fact, those packages are removed now. (If installed, please remove them manually before upgrading Engine.)
Please refer to commit msg for details.
Regards,
Vojtech