Big Sur / Can't open windows from finder properly, but works on terminal

Describe the bug
When I open a .tex file on MacVim from the Finder's level (just by clicking on a file), I get an error:

On the other hand, when I open the file form terminal, ie. mvim <file_name> it opens properly and every plugin works, as on MacOS Catalina. This strange behaviour emerged when I updated MacOS.

To Reproduce
As written above:

1. I open a file from Finder - error pops out and actually nothing works (just like it was disconnected from anything that is installed and configured by .vimrc)
2. When I open a file from terminal using mvim everything works as it should.

Expected behavior
No such errors, consistency between opening from terminal and finder.

Environment (please complete the following information):

• Vim version: VIM - Vi IMproved 8.2
• MacVim version: MacVim 8.2.1719 (up to date)
• OS: macOS Big Sur
• Terminal: GUI, Terminal.app

Additional context
It emerged after system update from Catalina to BigSur.
I have MacVim installed from .dmg file.

Bắt đầu bằng cách so sánh đường dẫn khởi chạy MacVim từ Finder với đường dẫn mvim trong terminal, sử dụng khác biệt được báo cáo khi tải .vimrc và môi trường MacVim 8.2 làm cơ sở tái hiện. Xác nhận hành vi trên macOS Big Sur, sau đó truy vết điểm vào khởi chạy GUI cho đến khi cùng hành vi đã cấu hình hoạt động từ Finder mà không có lỗi.