Please could you help identify the cause of the error messages below. I'm also finding email invites are never sent (but system emails are)?

These errors are generated by all the social media icons.

Warning: Invalid argument supplied for foreach() in /home1/xxx/public_html/components/com_parainvite/oauth/hybridauth/Hybrid/Providers/Google.php on line 260

Warning: ini_set(): A session is active. You cannot change the session module's ini settings at this time in /home1/xxx/public_html/libraries/joomla/session/handler/joomla.php on line 45

Warning: Cannot modify header information - headers already sent by ...