"Error occurred running Grails CLI: null" when running grails 3.0 command line

Question

I'm trying to run grails list-profiles, but receive the following error:

snowch@snowch-ws2:~/repos$ grails list-profiles --stacktrace
| Error Error occurred running Grails CLI: null (NOTE: Stack trace has been filtered. Use --verbose to see entire trace.)
java.lang.NullPointerException
    at org.grails.cli.profile.git.GitProfileRepository.getAllProfiles(GitProfileRepository.groovy:72)
    at org.grails.cli.profile.commands.ListProfilesCommand.handle(ListProfilesCommand.groovy:43)
    at org.grails.cli.GrailsCli.execute(GrailsCli.groovy:173)
    at org.grails.cli.GrailsCli.main(GrailsCli.groovy:99)
| Error Error occurred running Grails CLI: null

My versions are:

snowch@snowch-ws2:~/repos$ grails --version
| Grails Version: 3.0.1
| Groovy Version: 2.4.3
| JVM Version: 1.7.0_75

This was on a fresh install of grails and gvm.

The command grails create-app myapp works without error.

This question is similar to Grails 3.0 error, nullpointer, however, that question does not state what command is being run.

Answer 1

I had same experience when I was working on "Building an Andoird Client" guide, I got the following message whenever I try to create an app in the same folder where I've created the first app grails-app : | Error Error occurred running Grails CLI: null (Use --stacktrace to see the ful l trace) So obviously, when you create a grails app in folder containing "grails-app" directory, grails will consider this folder as full grails application, hence cannot create-app in that directory. I used: Grails 3.1.15 Java 1.8.0.101 Hope this help.

Answer 2

After searching online, I found that I needed to set my GRAILS_OPTS environment variable as follows before running the command:

export GRAILS_OPTS="-XX:-UseSplitVerifier -Xverify:none"

Source of fix: https://grails.org/news/1292028

Answer 3

I have not figured out, what is the exact cause of the error, but it seems to occur if you try to run grails 3 in the system where grails 2 is also installed.

What I did to get the command run - I created the project in a new directory. The directory for my old grails app was: /home/me/projects/oldgrailsapp

when I tried to execute the grails command in /home/me/projects it failed, but when I tried this in another directory /home/me/projects_new, it succeeded. So I guess that the problem was that old grails configuration was somehow interfering with the new one.

I also removed references to old grails and groovy versions from the PATH variable by editing .bashrc file in my home directory (I really do not know if it was needed).