getTemplates has a Fatal Error when a template has an image field

[tanabi]

Describe the bug
getTemplates has a Fatal Error when a template has an image field

PHP Fatal error:  Uncaught JMS\Serializer\Exception\LogicException: The type value "image" does not exist in the discriminator map of class "Eversign\FormField". Available types: date_signed, signature, initials, note, text, checkbox, radio, dropdown, attachment, checkboxGroup in /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/jms/serializer/src/GraphNavigator/DeserializationGraphNavigator.php:240
Stack trace:
#0 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/jms/serializer/src/GraphNavigator/DeserializationGraphNavigator.php(178): JMS\Serializer\GraphNavigator\DeserializationGraphNavigator->resolveMetadata()
#1 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/jms/serializer/src/JsonDeserializationVisitor.php(112): JMS\Serializer\GraphNavigator\DeserializationGraphNavigator->accept()
#2 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/jms/serializer/src/GraphNavigator/DeserializationGraphNavigator.php(140): JMS\Serializer\JsonDeserializationVisitor->visitArray()
#3 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/jms/serializer/src/JsonDeserializationVisitor.php(112): JMS\Serializer\GraphNavigator\DeserializationGraphNavigator->accept()
#4 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/jms/serializer/src/GraphNavigator/DeserializationGraphNavigator.php(140): JMS\Serializer\JsonDeserializationVisitor->visitArray()
#5 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/jms/serializer/src/JsonDeserializationVisitor.php(188): JMS\Serializer\GraphNavigator\DeserializationGraphNavigator->accept()
#6 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/jms/serializer/src/GraphNavigator/DeserializationGraphNavigator.php(214): JMS\Serializer\JsonDeserializationVisitor->visitProperty()
#7 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/jms/serializer/src/JsonDeserializationVisitor.php(112): JMS\Serializer\GraphNavigator\DeserializationGraphNavigator->accept()
#8 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/jms/serializer/src/GraphNavigator/DeserializationGraphNavigator.php(140): JMS\Serializer\JsonDeserializationVisitor->visitArray()
#9 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/jms/serializer/src/Serializer.php(252): JMS\Serializer\GraphNavigator\DeserializationGraphNavigator->accept()
#10 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/jms/serializer/src/Serializer.php(180): JMS\Serializer\Serializer->visit()
#11 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/eversign/eversign-php-sdk/sdk/Eversign/ApiRequest.php(261): JMS\Serializer\Serializer->deserialize()
#12 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/eversign/eversign-php-sdk/sdk/Eversign/Client.php(257): Eversign\ApiRequest->startRequest()
#13 /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/eversign/eversign-php-sdk/sdk/Eversign/Client.php(316): Eversign\Client->getDocuments()
#14 Standard input code(7): Eversign\Client->getTemplates()
#15 {main}
  thrown in /root/work/qsbooker/public_html/wp-content/plugins/qsbooker/vendor/jms/serializer/src/GraphNavigator/DeserializationGraphNavigator.php on line 240

Script is as follows (credentials redacted):

<?php
    require_once('vendor/autoload.php');
    $client = new \Eversign\Client('xxx', 'xxx');

    $client->setSelectedBusinessById(xxx);

    print_r($client->getTemplates());
?>

To Reproduce
Steps to reproduce the behavior:

1. Use composer to install SDK
2. Make sure your account has a template with an image field in it.
3. Run the above PHP script

Expected behavior
image is a field type coming from Eversign, so it should be valid and not generate an error.

Desktop (please complete the following information):

• OS: Linux (Ubuntu 20.04)
• Command line

[tanabi]

This also fails on createDocumentFromTemplate for a template with an image field.