Deprecated: base64_decode(): Passing null to parameter #1 ($string) of type string is deprecated in D:\Server\ProjectMH\Data\DataEncoder.php on line 16

Fatal error: Uncaught InvalidArgumentException: file "/path/to/service/account/credentials.json" does not exist in D:\Server\ProjectMH\vendor\google\apiclient\src\Client.php:980 Stack trace: #0 D:\Server\ProjectMH\InAppPurchase\GoogleInAppPurchase2.php(14): Google\Client->setAuthConfig('/path/to/servic...') #1 {main} thrown in D:\Server\ProjectMH\vendor\google\apiclient\src\Client.php on line 980