This error is due to a syntax error in the /CRM/Logging/Differ.php file in line 76:
$contactIdClause = "AND ( entity_id = %3 AND entity_table = 'civicrm_contact' ) OR (entity_id IN (SELECT note.id FROM {$this->db}.log_civicrm_note note WHERE note.entity_id = %3 AND note.entity_table = 'civicrm_contact') AND entity_table = 'civicrm_note')";
should be
$contactIdClause = "AND ( entity_id = %3 AND entity_table = 'civicrm_contact' ) OR (entity_id IN (SELECT note.id FROM `{$this->db}`.log_civicrm_note note WHERE note.entity_id = %3 AND note.entity_table = 'civicrm_contact') AND entity_table = 'civicrm_note')";
note `{$this->db}`
This error is due to a syntax error in the /CRM/Logging/Differ.php file in line 76:
$contactIdClause = "AND ( entity_id = %3 AND entity_table = 'civicrm_contact' ) OR (entity_id IN (SELECT note.id FROM {$this->db}.log_civicrm_note note WHERE note.entity_id = %3 AND note.entity_table = 'civicrm_contact') AND entity_table = 'civicrm_note')";
should be
$contactIdClause = "AND ( entity_id = %3 AND entity_table = 'civicrm_contact' ) OR (entity_id IN (SELECT note.id FROM `{$this->db}`.log_civicrm_note note WHERE note.entity_id = %3 AND note.entity_table = 'civicrm_contact') AND entity_table = 'civicrm_note')";
note `{$this->db}`