Woocommerce cart API error

In the plugin admin settings are enabled such options:
– Earn Points Per Currency Settings
Per Points Conversion 1$ = 2 ?Points
– Redemption Settings
Conversion rate for Cart Sub-total Redemption: 100 points = 1$
Allow Customers to Apply Points During Checkout: true

When user applies points on Website UI checkout, appears Cart Discount and everything works good. But if we apply points on Website UI and after that use Woocommerce API: GET /wp-json/wc/store/v1/cart/ in the json response we get error.

Example of response:

{
"items": [
{
"key": "8a1e808b55fde9455cb3d8857ed88389",
"id": 1076,
"type": "simple",
"quantity": 1,
"quantity_limits": {
"minimum": 1,
"maximum": 9999,
"multiple_of": 1,
"editable": true
},
"name": "Adidas Cap",
"short_description": "",
"description": "",
"sku": "PPYX-CAU086_80X",
"low_stock_remaining": null,
"backorders_allowed": false,
"show_backorder_badge": false,
"sold_individually": false,
"permalink": "/product/adidas-cap-2/",
"images": [
],
"variation": [],
"item_data": [],
"prices": {
"price": "73900",
"regular_price": "73900",
"sale_price": "73900",
"price_range": null,
"currency_code": "UAH",
"currency_symbol": "?",
"currency_minor_unit": 2,
"currency_decimal_separator": ",",
"currency_thousand_separator": "",
"currency_prefix": "",
"currency_suffix": " ?",
"raw_prices": {
"precision": 6,
"price": "739000000",
"regular_price": "739000000",
"sale_price": "739000000"
}
},
"totals": {
"line_subtotal": "73900",
"line_subtotal_tax": "0",
"line_total": "73900",
"line_total_tax": "0",
"currency_code": "UAH",
"currency_symbol": "?",
"currency_minor_unit": 2,
"currency_decimal_separator": ",",
"currency_thousand_separator": "",
"currency_prefix": "",
"currency_suffix": " ?"
},
"catalog_visibility": "visible",
"extensions": {}
}
],
"coupons": [],
"fees": [],
"totals": {
"total_items": "73900",
"total_items_tax": "0",
"total_fees": "0",
"total_fees_tax": "0",
"total_discount": "0",
"total_discount_tax": "0",
"total_shipping": "0",
"total_shipping_tax": "0",
"total_price": "73900",
"total_tax": "0",
"tax_lines": [],
"currency_code": "UAH",
"currency_symbol": "?",
"currency_minor_unit": 2,
"currency_decimal_separator": ",",
"currency_thousand_separator": "",
"currency_prefix": "",
"currency_suffix": " ?"
},
"shipping_address": {},
"billing_address": {},
"needs_payment": true,
"needs_shipping": true,
"payment_requirements": [
"products"
],
"has_calculated_shipping": true,
"shipping_rates": [
],
"items_count": 1,
"items_weight": 0,
"cross_sells": [],
"errors": [
{
"code": "woocommerce_rest_cart_coupon_error",
"message": "The “cart discount” coupon has been removed from your cart: Coupon “cart discount” does not exist!"
}
],
"payment_methods": [],
"extensions": {}
}