PHP Error [Warning]

URI: index.php?option=com_contact&task=view&contact_id=1&Itemid=42
Path: /includes/Core/elxis.php
Line: 1036
str_split() expects parameter 2 to be int, string given

PHP Error [Warning]

URI: index.php?option=com_contact&task=view&contact_id=1&Itemid=42
Path: /includes/Core/elxis.php
Line: 1037
count(): Parameter must be an array or an object that implements Countable

PHP Error [Warning]

URI: index.php?option=com_contact&task=view&contact_id=1&Itemid=42
Path: /components/com_contact/contact.class.php
Line: 98
Declaration of MambovCard::getVCard($sitename) should be compatible with vCard::getVCard()