grails command has error

[majidln]

when I enter grails upgrade command, below error raised:

java.lang.NullPointerException
	at org.grails.cli.GrailsCli.initializeProfile(GrailsCli.groovy:516)
	at org.grails.cli.GrailsCli.initializeApplication(GrailsCli.groovy:307)
	at org.grails.cli.GrailsCli.execute(GrailsCli.groovy:270)
	at org.grails.cli.GrailsCli.main(GrailsCli.groovy:159)
| Error Error occurred running Grails CLI: null

what is the problem? what is the solution?

[jmiranda]

From the stacktrace it appears you might be using a more recent version, like Grails 3. Can you let me know what version of Grails you're using here?

Unfortunately, we're stuck on Grails 1.3.9 for the time being. But you can use Sdkman to install and use different versions of Grails.

http:https://sdkman.io/install.html

Once you follow the installation instructions, it's as simple as:

sdk use grails 1.3.9 

Let me know if you have further questions.

[jmiranda]

Closing as the previous comment answered the question. However, if someone were to stumble onto this before we finished the Grails 3 migration and wanted to run Grails 3 on our code base there's a long-lived feature branch housing all of the migration changes here.
https://github.com/openboxes/openboxes/tree/feature/upgrade-to-grails-3.3.10