PHP Call to undefined nameless function () on elseif statement

The following if/elseif/else statement is returning a Call to undefined function () ... on line 111 error I don't understand:

<?php if ( $this->NEXT_PAYMENT_DATE < date('Y-m-d') ) : ?>
<?php elseif ( ($this->LOAN_STATUS == 'V') && ($this->EXTRA_PAYMENT == '0.00') ) : ?>
<?php elseif ( ($this->LOAN_STATUS == 'V') && ($this->EXTRA_PAYMENT > '0.00') ) : ?>
<?php elseif ( $this->LOAN_STATUS == 'C' ) : ?>
<?php else : ?>
<?php endif; ?>

Line 111 matches the first elseif statement.

$this-> accesses the object keys with simple string data. No fields are null