Call to a member function update() on null when creating groups

Hi

When trying to create a group from the backend I get the following message:
Call to a member function update() on null

It's a new site, so it is possibly something I've missed as part of the configuration. I have created a category for the new group and there is a member who has access to moderate the group.

I've had a look at the logs on the server but there is nothing in there.

If I try and add the group from the front end I get what looks like a 404 error page on the following url

https://www.sitename.net.nz/community/groups/steps/1

I'm also seeing a warning msg in the adminstrator error_log as such:

[08-Dec-2017 09:29:30 UTC] PHP Warning: include(/home/sitename/public_html/administrator/components/com_easysocial/themes/default/profiles/form/registration.php): failed to open stream: No such file or directory in /home/sitename/public_html/administrator/components/com_easysocial/includes/template/template.php on line 284



Line 283 and 284 of that file above reads

// Magic happens here when we include the template file.

		include($this->file);

Any thoughts on what could be causing these issues and how I can fix them?

Thanks in advance