Fatal error: Uncaught Error: Interface "Psr\Http\Client\ClientExceptionInterface" not found in /home/ss294870/masa-web.jp/public_html/webpush.masa-web.jp/vendor/psr/http-client/src/RequestExceptionInterface.php:14 Stack trace: #0 {main} thrown in /home/ss294870/masa-web.jp/public_html/webpush.masa-web.jp/vendor/psr/http-client/src/RequestExceptionInterface.php on line 14