There are problems with new mysqlbridge and old mysqlbridge.
The problem looks the same, but the behavior is different. The old one it does do nothing when I do a query, no exception, just press the button and there's nothing. The new one is crashing at the app launch.
I tried the demo, it behaves the same way.
I am using target JDK 1.8.0, SDK 27, NDK 10e, Ant 1.9.7, and Gradle 4.7.
edit: I got the error, it said: "Database is not assigned". But when I looking into the mysql57connectionbridge unit, but I quite sure it's assigned. It's confusing. Hahaha...