![Error 321. An error occurred while validating the request:-"bq" - IBController - AmiBroker Community Forum Error 321. An error occurred while validating the request:-"bq" - IBController - AmiBroker Community Forum](https://forum.amibroker.com/uploads/default/original/2X/b/b9e2020a7b8715ed3e680a6e452e9e092b84c60d.png)
Error 321. An error occurred while validating the request:-"bq" - IBController - AmiBroker Community Forum
![Diagnosing Issues and Troubleshooting with the TWS API | Trading Lesson | Traders' Academy | IBKR Campus Diagnosing Issues and Troubleshooting with the TWS API | Trading Lesson | Traders' Academy | IBKR Campus](https://ibkrcampus.com/wp-content/uploads/2022/11/sample4.png)
Diagnosing Issues and Troubleshooting with the TWS API | Trading Lesson | Traders' Academy | IBKR Campus
![WTF IBKR. 11 hours Maintenance???? Been getting the following error for 3 hours at least: "500 Internal Server Error We're Sorry. The server is temporarily unavailable. Please try again later." : r/interactivebrokers WTF IBKR. 11 hours Maintenance???? Been getting the following error for 3 hours at least: "500 Internal Server Error We're Sorry. The server is temporarily unavailable. Please try again later." : r/interactivebrokers](https://i.redd.it/alwmi6vh6le71.png)
WTF IBKR. 11 hours Maintenance???? Been getting the following error for 3 hours at least: "500 Internal Server Error We're Sorry. The server is temporarily unavailable. Please try again later." : r/interactivebrokers
![Error 321. An error occurred while validating the request:-"bq" - IBController - AmiBroker Community Forum Error 321. An error occurred while validating the request:-"bq" - IBController - AmiBroker Community Forum](https://forum.amibroker.com/uploads/default/original/2X/b/bbecb04d3bb5bc9031d9d856ae77619aae9dea2a.png)