I updated my php to version 5.6 and now works fine.
Same issue.
Try to share this post on FB to test: http://duedigital.com.br/logomarca-para-cassiano-sanches-advocacia/
Everything was fine until I update the plugin to version 3.2.3
WordPress: 4.5 and Plugin: 3.3.8
I was using this plugin then I updated my wordpress and plugin.
Now I get this error when I try to active the plugin.
I deleted the plugin and reinstalled it from wordpress but I still get this error.
This is my site: http://duedigital.com.br/
Thanks