fix

app/Console/Commands/Trace.php

@@ -146,8 +146,8 @@ class Trace extends Command
             $walletPassword = "PW5KiK4oBMgjvxjhYxJzeRWNYtLot7GbH9wLM8pDmTH17yzUb4GTP";
             $walletName = "caihongxingqiu";
             $eos->setWalletInfo($walletName, $walletPassword);
-            $aliceBalance = $api->getCurrencyBalance('eosio.token', $accountA, $coinCode);
-            $bobBalance = $api->getCurrencyBalance('eosio.token', $accountB, $coinCode);
+            $aliceBalance = json_decode($api->getCurrencyBalance('eosio.token', $accountA, $coinCode));
+            $bobBalance = json_decode($api->getCurrencyBalance('eosio.token', $accountB, $coinCode));
             $this->line('balance-a:'.var_export($aliceBalance,true));
             $this->line('balance-b:'.var_export($bobBalance,true));
             $balaceA = 0;