FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':runClient'.
> Process 'command 'D:\MCreatorEAP20206b52319\jdk\bin\java.exe'' finished with non-zero exit value 1
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
Deprecated Gradle features were used in this build, making it incompatible with Gradle 5.0.
Use '--warning-mode all' to show the individual deprecation warnings.
BUILD FAILED in 22s
10 actionable tasks: 4 executed, 6 up-to-date
Hard to guess without you giving any information.
Is this your build?
If yes, what do you do?
What is runClient task?
If it is not your build, probably ask the maintainer of that build what you are supposed to do to make it work.
If runClient is a a JavaExec task which I suppose, well then as the error stated the Java process you started exited with exit code 1, so the build fails.
Then there is nothing wrong we could help here, except maybe tell you how to ignore the exit value so that the task is successful even if the called program is not.
If there is no output that tells you what went wrong, maybe there are some logs that contain the information?
Or maybe you get more information when running with --info or with --debug?
At least you should get the command line executed and could execute it manually to see whether you get more information.
You can also use --debug-jvm to listen for a debugger and then attach the debugger to port 5005 to debug what is happening.
Same as I wrote in the first comment here.
Hard to guess without you providing any information what your problem is.
And actually it is unlikely you have the same problem and should instead open a new thread with your problem instead of reviving a year old thread and without any actual information.