Redmine

Hi all.

Hope someone can assist me with installing this email fetcher plugin. I put the content here "C:\Bitnami\redmine-3.1.0-0\apps\redmine\htdocs\plugins" and the plugin 'Fetch emails' shows up no problem on the Administration page but when I go to click Test or Fetch I receive:

"Internal error

An error occurred on the page you were trying to access.
If you continue to experience problems please contact your Redmine administrator for assistance.

If you are the Redmine administrator, check your log files for details about the error."

I have reviewed the logs and I can see this:

Started GET "/redmine/admin/email_configurations/2/test" for 127.0.0.1 at 2017-04-25 09:45:51 -0700
Processing by EmailConfigurationsController#test as HTML
Parameters: {"id"=>"2"}
Current user: justin (id=1)
Completed 500 Internal Server Error in 40ms (ActiveRecord: 1.0ms)

OpenSSL::SSL::SSLError (SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed):
lib/redmine/sudo_mode.rb:63:in `sudo_mode'

Here is my environment information:

Environment:
Redmine version 3.1.0.stable
Ruby version 2.0.0-p645 (2015-04-13) [i386-mingw32]
Rails version 4.2.3
Environment production
Database adapter Mysql2
SCM:
Subversion 1.8.11
Git 1.9.5
Filesystem
Redmine plugins:
redmine_email_fetcher 0.3.1

I have been troubleshooting this for weeks now, hoping someone can guide me in the right direction.

Thanks.