While uploading jira add-on i am facing an error saying reffer to logs. I have provided the log infomation.
2017-09-17 13:29:34,861 UpmAsynchronousTaskManager:thread-4 WARN vedkul617 799x1383x1 sd93kd 0:0:0:0:0:0:0:1 /rest/plugins/1.0/ [c.a.u.core.install.DefaultPluginInstallationService] Plugin installation failed: Unknown error, plugin not installed
2017-09-17 13:29:34,861 UpmAsynchronousTaskManager:thread-4 WARN vedkul617 799x1383x1 sd93kd 0:0:0:0:0:0:0:1 /rest/plugins/1.0/ [c.a.u.core.install.DefaultPluginInstallationService] com.atlassian.upm.spi.PluginInstallException: Unknown error, plugin not installed
com.atlassian.upm.spi.PluginInstallException: Unknown error, plugin not installed
at com.atlassian.upm.core.install.AbstractPluginInstallHandler.installArtifact(AbstractPluginInstallHandler.java:122)
at com.atlassian.upm.core.install.JarPluginInstallHandler.installPluginInternal(JarPluginInstallHandler.java:52)
at com.atlassian.upm.core.install.AbstractPluginInstallHandler.installPlugin(AbstractPluginInstallHandler.java:60)
at com.atlassian.upm.core.install.DefaultPluginInstallationService.execute(DefaultPluginInstallationService.java:117)
at com.atlassian.upm.core.install.DefaultPluginInstallationService.install(DefaultPluginInstallationService.java:91)
at com.atlassian.upm.install.UpmPluginInstallationService.install(UpmPluginInstallationService.java:97)
at com.atlassian.upm.core.rest.resources.install.InstallTask.installFromFile(InstallTask.java:156)
at com.atlassian.upm.core.rest.resources.install.InstallFromFileTask.executeTask(InstallFromFileTask.java:37)
at com.atlassian.upm.core.rest.resources.install.InstallTask.run(InstallTask.java:81)
at com.atlassian.upm.core.async.AsynchronousTaskManager.executeTask(AsynchronousTaskManager.java:124)
at com.atlassian.upm.core.async.AsynchronousTaskManager$1.call(AsynchronousTaskManager.java:102)
at com.atlassian.upm.core.async.AsynchronousTaskManager$1.call(AsynchronousTaskManager.java:99)
at com.atlassian.sal.core.executor.ThreadLocalDelegateCallable.call(ThreadLocalDelegateCallable.java:38)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)