RCE/RCD handle 500 server error with validation on 'initial-qualification' procedure type

Summary: 500 server error when there are no any bids in body

STR:

1. Go to /api/procedures
2. Try to create procedure with next body:

{
    "sellingMethod": "railwayCargo-dutch-initial-qualification",
    "auctionPeriod": {
        "startDate": "2021-12-13T09:04:02.518085+00:00"
    },
    "title": {
        "uk_UA": "Аукціон продажу послуг з використання вагонів",
        "en_US": "RailwayCargoEnglish"
    },
    "description": {
        "uk_UA": "Аукціон продажу послуг з використання вагонів",
        "en_US": "RailwayCargoEnglish"
    },
    "accessDetails": {
        "uk_UA": "Порядок та можливий час ознайомлення з лотом",
        "en_US": "Auction access details"
    },
    "sellingEntity": {
        "identifier": {
            "id": "12345678",
            "scheme": "UA-EDR",
            "legalName": {
                "uk_UA": "ЕДРПОУ",
                "en_US": "EDRPOU"
            }
        },
        "address": {
            "streetAddress": {
                "uk_UA": "Хрещатик, 45a",
                "en_US": "Khreschatyk, 45a"
            },
            "locality": {
                "uk_UA": "Київ",
                "en_US": "Kyiv"
            },
            "region": {
                "uk_UA": "Київ",
                "en_US": "Kyiv"
            },
            "postalCode": "01002",
            "countryName": {
                "uk_UA": "Україна",
                "en_US": "Ukraine"
            }
        },
        "representativeInfo": "Довіреність № 123 від 22.02.2012, дійсна до 30.03.2012/Наказ № 142 від 14.12.2019/Статут ТОВ Кульбаба від 24.07.2002",
        "contactPoint": {
            "name": {
                "uk_UA": "Україна",
                "en_US": "Ukraine"
            },
            "telephone": "+380123456789",
            "faxNumber": "+380123456789",
            "email": "admin@example.com"
        }
    },
    "lotId": "UA-PS-19991212-00000",
    "value": {
        "currency": "UAH",
        "amount": 1
    },
    "tenderAttempts": 2,
    "items": [
        {
            "description": {
                "uk_UA": "Україна",
                "en_US": "Ukraine"
            },
            "classification": {
                "scheme": "CAV",
                "id": "34621100-7"
            },
            "additionalClassifications": [
                {
                    "scheme": "CPVS",
                    "id": "MA08-5"
                }
            ],
            "requestLifeTime": {
                "dateFrom": "2020-07-30T16:28:01.041+0000",
                "dateTill": "2020-07-30T16:28:01.041+0000"
            },
            "unit": {
                "code": "H87"
            },
            "quantity": 900,
            "wagonSpecies": "20",
            "loadingRestriction": "2",
            "address": {
                "streetAddress": {
                    "uk_UA": "Хрещатик, 43a",
                    "en_US": "Khreschatyk, 43a"
                },
                "locality": {
                    "uk_UA": "Київ",
                    "en_US": "Kyiv"
                },
                "region": {
                    "uk_UA": "Київ",
                    "en_US": "Kyiv"
                },
                "postalCode": "01001",
                "countryName": {
                    "uk_UA": "Україна",
                    "en_US": "Ukraine"
                }
            }
        }
    ],
      "registrationFee": {
        "currency": "UAH",
        "amount": 0
    },
    "previousAuctionId": "UA-PS-1122-33-44-000000-0"
}

(X-R:) 8479d19c-9b8c-4422-83d5-afd213141240

Actual result: as you can see there is no bids in body, so it crashes, but must be handled with validation

Expected result: bids required validation