When I upgrade from 1.2.15 to 1.2.16 I get the following errors:
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Error: Cannot upgrade file : 'core/lib/BasePaymentHandler.php
Error: Cannot upgrade file : 'core/lib/PaymentHandlerInterface.php
Error: Cannot upgrade file : 'core/lib/BasePaymentHandler.php
Error: Cannot upgrade file : 'core/lib/PaymentHandlerInterface.php
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Any idea what I can do to fix?