Please check the logs for exceptions and the root cause. The server log file is named fireserver.log and will be written in the install directory.
Possible causes for Sparkflows not to start could be:
- Either H2 database was not created or it is failing to find the table.
- H2 database schema was not updated.
- The server did not start properly because some other Application is running on the configured port. The default configured port for Sparkflows is :8080.The HTTP and HTTPS ports for Sparkflows can be updated in conf/application.properties.