V2 Fatal Error when resending envelope

[decadeofdefeat]

My environment is currently limited to PHP 5.5.9 so I'm attempting to put V2 of this software into production. (Composer requires 5.5.36 to install v3).

When I attempt to resend an envelope, I run into errors with ObjectSerializer:

$envelopeApi = new DocuSign\eSign\Api\EnvelopesApi($apiClient);

$updateOptions = new DocuSign\eSign\Api\EnvelopesApi\UpdateOptions();
$updateOptions->setResendEnvelope("true");

$update_summary = $envelopeApi->update($account_id, $env_id, $updateOptions);

PHP Fatal error:  Access to undeclared static property: DocuSign\eSign\Api\EnvelopesApi\UpdateOptions::$swaggerTypes in .../vendor/docusign/esign-client/src/ObjectSerializer.php on line 68

Any help would be appreciated!

[decadeofdefeat]

Nevermind, I forgot to pass an empty Envelope model.

[Crysalist]

@decadeofdefeat can you elaborate on how exactly you did it?

[decadeofdefeat]

This happened so long ago that I honestly don't remember.

[Crysalist]

Finally found it - the body cannot be null you need to replace it with "{}"
so in the end it looked something like this:
$update_summary = $envelopeApi->update($account_id, $env_id, "{}", $updateOptions);