Error creating Issue: Error occurs while creating issue - using scripted field

[Nitin Sharma]

Whenever I am trying to use the scripted field, it works fine but while creating an new Issue JIRA thorws error

Error creating Issue: Error occurs while creating issue:This is due to the plugin being incompatible with the version of JIRA. For more details please consult logs.

MY JIRA and script runner versions are 

JIRA v6.1.6

Scripr Runner v. 2.1.16

My script is like below, please help me to find the cause.

import com.atlassian.jira.issue.CustomFieldManager;

import com.atlassian.jira.issue.fields.CustomField;

import com.atlassian.jira.component.ComponentAccessor;

CustomFieldManager customFieldManager = ComponentAccessor.getCustomFieldManager()

CustomField planned = customFieldManager.getCustomFieldObjectByName("Planned End Date");

CustomField actual = customFieldManager.getCustomFieldObjectByName("Actual End Date");

return issue.getCustomFieldValue(actual)  - issue.getCustomFieldValue(planned) ;

[Guilherme Nogueira]

Hi, I just tested your code and It's working fine.

Maybe you need to change your field template?