Fixed an issue when command not found in web RCON
Fixed an issue when command not found in web RCON

When running a command in RCON that could not be found, error was returned.
Fixed by returning the json.
cyberkitsune/PSO2Proxy,flyergo/PSO2Proxy,alama/PSO2Proxy,alama/PSO2Proxy,cyberkitsune/PSO2Proxy,flyergo/PSO2Proxy,alama/PSO2Proxy,cyberkitsune/PSO2Proxy