Xporter is not able to Add or Upload templates

Whenever we try to edit or create a new template we are getting an error in the security validations.

Steps to reproduce:

1. Create a folder for Jira home
   • <your default directory>/data_jira
2. Create a symlink of data_jira with the name data
   • <your default directory>/data
3. Create a new Jira environment
4. When you have to enter the Jira Home use the path created in point 2
5. After configuring Jira and installing Xporter 6.7.3 try to add a template or update.

or

1. Go to an existing Jira home folder
2. Create a symlink from the current Jira home
3. go to <installation-directory>/atlassian-jira/WEB-INF/classes/jira-application.properties file
4. Add the path to the Jira home directory like in the following example:
   1. jira.home = <Path to symlink>
5. Start your Jira environment
6. Try to add a or update template.

Actual result

The error message appears on dialog and log files.

Expected result

The template should be created or updated without any problem.