check array

www-api/app/Controllers/WrenchWallet.php

@@ -249,7 +249,7 @@ class WrenchWallet extends BaseController
         $endpoint = "USERS_WALLETS-". $in["uid"];
 
         $out = $this->getCache($endpoint);
-        if ( count($out)==0 ){
+        if (!is_array($out) || count($out)==0 ){
             $local_url = "http://".$this->micro_service_net1.":3037/getwallets";
             $out = $this->APIcall('GET', $local_url, $in);
             $this->saveCache($endpoint,$out,1500);