更新

app/Services/TencentImFriendService.php

@@ -224,7 +224,7 @@ class TencentImFriendService
         $baseApiHost = $this->getTencentImRestApiBaseHost();
         $params = [
             'From_Account' => $fromAccount,
-            'To_Account' => [`$toAccount`],
+            'To_Account' => array($toAccount),
         ];
         $apiResult = $this->requestApi($baseApiHost, $params);
         return $apiResult;