fix bug

api/controllers/WalletController.php

@@ -169,7 +169,7 @@ class WalletController extends BaseController
         if (false == $switch) {
             $result = $service->getTokenBalance($address, $execer, $symbol);
         } else {
-            $result = $service->getBalance($address, $execer = '');
+            $result = $service->getBalance($address, $execer = '', $multiple = false);
         }
 
         if (0 !== $result['code']) {

common/service/chain33/Chain33Service.php

@@ -255,12 +255,20 @@ class Chain33Service
         return $this->send($params, 'Chain33.Query');
     }
 
-    public function getBalance($address, $execer = "")
+    public function getBalance($address, $execer = "", $multiple = true)
     {
+        if ($multiple == false) {
+            $params = [
+                'addresses' => $address,
+                'execer' => $execer,
+            ];
+        } else {
             $params = [
                 'addresses' => [$address],
                 'execer' => $execer,
             ];
+        }
+
         return $this->send($params, 'Chain33.GetBalance');
     }