LNDg has wrong GUI after installing

I have my umbrel on local site (HTTP), I installed LNDg, but after installation it appears as a flat text. In consoole, I can see error message “The Cross-Origin-Opener-Policy header has been ignored, because the URL’s origin was untrustworthy.” I suppose, that it is because I do not use HTTPS.
Is there any way, how to run LNDg on internal network without HTTPS?

This is the current GUi… working on something different here


Thank you for quick reply