Array to String Conversion errors
Created by: ryanlrobinson
Recently began testing out Sparkpost and this extension. It's mostly great, but have one issue to look at. On the settings page (/civicrm/admin/setting/sparkpost) this PHP error appears dozens of times:
Notice: Array to string conversion in Civi\Core\SettingsMetadata::_filterSettingsSpecification() (line 149 of /home/cividemo/public_html/sites/all/modules/civicrm/Civi/Core/SettingsMetadata.php).
Anything I've tried still works despite the error, but best case it is disconcerting.
PHP 7.2.20 CiviCRM 5.15.1 Sparkpost extension 1.3, initially tried with the version in the extension directory, then tried with the latest version here