Error while creating a project using jira 7

[Adhikari Jitendra Kumar Das]

Method: 

ProjectCreationData.Builder pcdBuilder = new ProjectCreationData.Builder();
pcdBuilder.withName("test").withKey("EX").withDescription("Testing").withType("business").withProjectTemplateKey("com.atlassian.jira-core-project-templates:jira-core-project-management").withUrl("abc").withAssigneeType(12345678910L).withAvatarId(12545678910L);
ProjectCreationData pcd = pcdBuilder.build();

CreateProjectValidationResult newProjectVR = projectService
.validateCreateProject(user, // User
pcd 
); 

Log trace : 

2017-05-08 04:49:06,593 http-nio-8080-exec-14 uri:/secure/SDEProjectAdmin.jspa username:kadhikar ERROR [o.a.c.c.C.[.[localhost].[/].[action]] Servlet.service() for servlet [action] in context with path [] threw exception [java.lang.IllegalArgumentException: Invalid module key specified: ] with root cause
java.lang.IllegalArgumentException: Invalid module key specified:
at com.atlassian.plugin.ModuleCompleteKey.<init>(ModuleCompleteKey.java:49)
at com.atlassian.plugin.ModuleCompleteKey.<init>(ModuleCompleteKey.java:29)
at com.atlassian.plugin.manager.ProductPluginAccessorBase.getEnabledPluginModule(ProductPluginAccessorBase.java:165)
at com.atlassian.plugin.manager.ForwardingPluginAccessor.getEnabledPluginModule(ForwardingPluginAccessor.java:50)
at com.atlassian.plugin.manager.EnabledModuleCachingPluginAccessor.getEnabledPluginModule(EnabledModuleCachingPluginAccessor.java:39)
at com.atlassian.plugin.manager.ForwardingPluginAccessor.getEnabledPluginModule(ForwardingPluginAccessor.java:50)
at com.atlassian.plugin.manager.ProductPluginAccessor.getEnabledPluginModule(ProductPluginAccessor.java:17)
at com.atlassian.extension.plugins.ExtensionAccessingPluginAccessor.getEnabledPluginModule(ExtensionAccessingPluginAccessor.java:169)
at com.atlassian.jira.project.template.ProjectTemplateManagerImpl.findByKeyVisible(ProjectTemplateManagerImpl.java:99)
at com.atlassian.jira.project.template.ProjectTemplateManagerImpl.getProjectTemplate(ProjectTemplateManagerImpl.java:48)
at com.atlassian.jira.bc.project.DefaultProjectService.validateProjectTypeAndTemplate(DefaultProjectService.java:650)
at com.atlassian.jira.bc.project.DefaultProjectService.isValidAllProjectData(DefaultProjectService.java:634)
at com.atlassian.jira.bc.project.DefaultProjectService.validateCreateProject(DefaultProjectService.java:280)
at com.amd.jira.admin.sde.ProjectCloner.cloneProject(ProjectCloner.java:172)
at com.amd.jira.admin.sde.CreateSDEProject.doExecute(CreateSDEProject.java:120)
... 1 filtered
at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:63)
... 7 filtered
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
... 19 filtered
at com.atlassian.ams.shipit.servlet.filter.TomcatThreadFilter.doFilter(TomcatThreadFilter.java:70)
... 3 filtered
at

[Nic Brough _Adaptavist_]

This looks like your code is feeding a function a string that contains invalid data for a module key.  Check the template key doesn't need to be encoded, and look at the url as well.