Today I installed CjBlog.

When I tried to add the Archive module to my site it gave this error:

Warning: require_once(/home/barnycgp/public_html/components/com_content/helpers/constants.php): failed to open stream: No such file or directory in /home/barnycgp/public_html/modules/mod_cjblogarchive/mod_cjblogarchive.php on line 11

Here is my version information (this is on Joomla 3.6.5):

Thanks,
James