fix

app/Console/Commands/Trace.php

@@ -148,8 +148,8 @@ class Trace extends Command
             $eos->setWalletInfo($walletName, $walletPassword);
             $aliceBalance = $api->getCurrencyBalance('eosio.token', $accountA, $coinCode);
             $bobBalance = $api->getCurrencyBalance('eosio.token', $accountB, $coinCode);
-            $this->line('balance-a:'.var_export($aliceBalance,true));
-            $this->line('balance-b:'.var_export($bobBalance,true));
+            $this->line('balance-a:'.json_encode($aliceBalance,true));
+            $this->line('balance-b:'.json_encode($bobBalance,true));
             $balaceA = 0;
             $balaceB = 0;
             if (isset($aliceBalance[$accountA])) {