error while starting the portal game by lutris

people I recently installed the lutris on my linux debian, and downloaded the game “Portal”. But every time I open the game there is a small box with the words: A bios file is required to run this game.

What do I do to solve this bug?

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I have same problem. Any solution?

My guess would be that it’s a game run by emulator which requires an image of original console BIOS to work (as a form of DRM). If that’s the case, you’ll have to provide such an image (in runner settings, most likely)… or install a version of the game from a different platform.