Admin coupon not working when cart has products from multi vendor

Hello, please tell me how to solve the problem with coupons

I have created a coupon with a fixed discount type for the amount of the cart,
there are products from several vendors in the cart,

An error occurs after using the coupon “This coupon is invalid for multiple vendors”

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You may need to edit the file “wp-content\plugins\dokan-lite\includes\Order\Hooks.php”
Please tell me exactly how, no matter how much I searched, I could not find a solution, it is very important for me.

Thanks for the help!

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