Message: Server error: `GET https://www.payoo.vn/v2/api/paynow/get-installment-banks-partner?shopId=5098&amount=17950000&getFee=1&bank=STB&username=PY2_PHOVIET&domain=https%253A%252F%252Fsieuthimaylanh.com&checksum=63a5ac20516b31ecb4ff85850c632be013cb709d9fc84e1c0f524f636eda0798e7ebb87e5e71b124f0effe79a9b6f4fe2e1a806f1281abc522193f70ef6cb57c&version=2` resulted in a `500 Internal Server Error` response: