Occasionally something may go wrong with your webapp - your webapp may fail to load in your browser, not reflect your most recent changes and so on. In our experience, following the steps listed here should fix ~99% of any problems you encounter.
Restarting Tomcat may fix your issue. If you find you have to restart Tomcat often, you may want to give Tomcat more memory.
Also, if in a deadlock, Tomcat may not shutdown successfully. Be sure to check the Tomcat process really is gone before starting a new one.
The base-url property must valid or else queries will not run properly.
This file must live in the .intermine directory.
Run this command in your webapp directory:
$ ./gradlew clean
Verify /build is gone from your webapp directory.
$ ./gradlew cargoReDeployRemote