500 Error encountered on checkout page

[justWise]

I've been getting a 500 error while trying to checkout after making an order.

With error logging enabled I get this:

Object of class stdClass could not be converted to string.
Object of class stdClass could not be converted to string on line 23 in /public_html/huduma/vendors/blesta/h2o/h2o/datatype.php
UnknownException::setErrorHandler
Line 232

Object of class stdClass could not be converted to string.
Object of class stdClass could not be converted to string on line 23 in /public_html/huduma/vendors/blesta/h2o/h2o/datatype.php
UnknownException::setErrorHandler
Line 232"

 

Could you please help me out with some direction on how to resolve this error...

Thanks a lot.

Blesta 5.2.2 upgrade from 5.2.1