I'm having a problem retrieving a specific file through the asset API. The code is very simple
return $this->client->call('GET', "/admin/themes/$themeId/assets.json?asset[key]=config/settings_data.json");
This used to work, but for the last few days has been returning a list of all assets. I verified that the access scopes are correct, and I made other calls to the asset API (put and delete) and those were successful.