Why does the Mini Apps VKontakte application not start on Huawei and Xiaomi?

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Good afternoon!
The developed application https://vk.com/app7968691_341515662 does not run on Huawei and Xiaomi phones.
The launch of VKWebAppInit is provided by using the code:

A line is also added as recommended:


The entire text of the page that is registered as the application source:


Please tell me what could be the problem. Works correctly on other Android and iOS devices. I can't find a solution on the internet.