After I did a Backup and Migrate to a new system, I am getting two errors on any New Contact form. They are as follows:
Notice: Undefined property: CRM_Core_BAO_Tag::$tree in CRM_Core_BAO_Tag->getTree() (line 75 of /sites/all/modules/civicrm/CRM/Core/BAO/Tag.php).
Warning: Invalid argument supplied for foreach() in CRM_Contact_Form_Edit_TagsAndGroups::climbtree() (line 203 of /sites/all/modules/civicrm/CRM/Contact/Form/Edit/TagsAndGroups.php).
I also noticed that the tag box at the bottom of the page under "Tags and Groups" has gone missing. Is there any way to fix this problem without starting from scratch?