Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Atlassian JIRA by Chin Kim Loong, 1 year ago
via Atlassian JIRA by John Chin Kim Loong [Atlassian], 1 year ago
via Atlassian JIRA by Florin Manaila, 1 year ago
via Atlassian JIRA by Florin Manaila, 1 year ago
via Atlassian JIRA by Vicky Kharisma [Atlassian], 1 year ago
This exception has no message.
via Atlassian JIRA by Vicky Kharisma [Atlassian], 1 year ago
This exception has no message.
java.lang.NullPointerException: 	at com.atlassian.crowd.embedded.impl.IdentifierUtils.toLowerCase(IdentifierUtils.java:42)	at com.atlassian.cpji.fields.value.CachingUserMapper.getUsersByEmail(CachingUserMapper.java:64)	at com.atlassian.cpji.fields.value.CachingUserMapper.mapUser(CachingUserMapper.java:95)	at com.atlassian.cpji.fields.system.AssigneeFieldMapper.mapUser(AssigneeFieldMapper.java:101)	at com.atlassian.cpji.fields.system.AssigneeFieldMapper.getMappingResult(AssigneeFieldMapper.java:69)	at com.atlassian.cpji.fields.permission.SystemFieldMappingChecker.getFieldPermission(SystemFieldMappingChecker.java:83)	at com.atlassian.cpji.components.CopyIssueService.checkFieldPermissions(CopyIssueService.java:257)	at com.atlassian.cpji.components.remote.LocalJiraProxy.checkPermissions(LocalJiraProxy.java:151)	at com.atlassian.cpji.action.CopyIssueToInstanceAction.doDefault(CopyIssueToInstanceAction.java:503)