https://community.developer.cybersource.com/t5/Integration-and-Testing/Having-issues-connectiong-to-authorize-net/m-p/65825#M39439 <P>after downloading the sdk through composer(PHP) and doing the neccessary things, I run nto this problem</P><P>&nbsp;</P><PRE>Fatal error: Declaration of JMS\Serializer\JsonDeserializationVisitor::startVisitingObject(JMS\Serializer\Metadata\ClassMetadata $metadata, JMS\Serializer\object $object, array $type): void must be compatible with JMS\Serializer\Visitor\DeserializationVisitorInterface::startVisitingObject(JMS\Serializer\Metadata\ClassMetadata $metadata, JMS\Serializer\Visitor\object $data, array $type): void in /home/vagrant/Code/Project/vendor/jms/serializer/src/JsonDeserializationVisitor.php on line 14</PRE><P>What does it mean and how can I solve the problem</P> Thu, 17 Jan 2019 00:38:44 GMT walegbengasupo8 2019-01-17T00:38:44Z https://community.developer.cybersource.com/t5/Integration-and-Testing/Having-issues-connectiong-to-authorize-net/m-p/65825#M39439 <P>after downloading the sdk through composer(PHP) and doing the neccessary things, I run nto this problem</P><P>&nbsp;</P><PRE>Fatal error: Declaration of JMS\Serializer\JsonDeserializationVisitor::startVisitingObject(JMS\Serializer\Metadata\ClassMetadata $metadata, JMS\Serializer\object $object, array $type): void must be compatible with JMS\Serializer\Visitor\DeserializationVisitorInterface::startVisitingObject(JMS\Serializer\Metadata\ClassMetadata $metadata, JMS\Serializer\Visitor\object $data, array $type): void in /home/vagrant/Code/Project/vendor/jms/serializer/src/JsonDeserializationVisitor.php on line 14</PRE><P>What does it mean and how can I solve the problem</P> Thu, 17 Jan 2019 00:38:44 GMT https://community.developer.cybersource.com/t5/Integration-and-Testing/Having-issues-connectiong-to-authorize-net/m-p/65825#M39439 walegbengasupo8 2019-01-17T00:38:44Z https://community.developer.cybersource.com/t5/Integration-and-Testing/Having-issues-connectiong-to-authorize-net/m-p/65909#M39509 <P>Hi&nbsp;<a href="https://community.developer.cybersource.com/t5/user/viewprofilepage/user-id/28147">@walegbengasupo8</a></P> <P>&nbsp;</P> <P>Please provide us with more details on&nbsp;the version of PHP-SDK you are using.</P> <P>&nbsp;</P> <P>Did you do a fresh setup with composer or did you upgrade your setup from previous version of sdk to the current one ?</P> <P>&nbsp;</P> <P>Also sharing the OS and PHP version information would help us while looking into this issue.</P> <P>&nbsp;</P> <P>Kaushik</P> Mon, 21 Jan 2019 10:32:45 GMT https://community.developer.cybersource.com/t5/Integration-and-Testing/Having-issues-connectiong-to-authorize-net/m-p/65909#M39509 kikmak42 2019-01-21T10:32:45Z