docusign php sdk: Call to a member function read() on string in ObjectSerializer.php:285
This was a confirmed SDK bug (DCM-4285), fixed in the 5.3.0 release. Upgrade with composer require docusign/esign-client:^5.3.0 (or newer). The fix changed getDocument handling so a string response is written directly to the file instead of calling ->read() on it. If you cannot upgrade, patch ObjectSerializer.php arou…
Problem outcome: unknown