Prosite update crashed my site

Hi there, i'm trying to setup Fundraiser on my practice domain so i can use it for a new crowdfunding project. I updated some of my plugins and the Prosite update appears to have crashed my whole site.
If you go to http://www.communifi.org you'll see

Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /home/thedream/public_html/communifi.org/wp-content/plugins/pro-sites/pro-sites-files/lib/ProSites/Module/Taxamo/lib/Taxamo/Swagger.php on line 185

I've just come back as new member, bit rusty but I'm disappointed I can't get on with development based on this prosite error.

If you coudl help me as soon as you can.

Thanks

Daniel