fix

classes/fpf/http/SwooleHttpClient.php

@@ -130,7 +130,7 @@ class SwooleHttpClient
         if (true === $scheme && !$parts['port']) {
             $parts['port'] = 443;
         }
-        $parts['port'] = intval($parts['port'] ?? 80);
+        $parts['port'] = $parts['port'] ? intval($parts['port']) : 80;
         $this->curl_handle = new Client($parts['host'], $parts['port'], $scheme);
         $full_url = $this->full_url;
         $headers = [];