lazer tournament client get black screen

[Mirageasuka]

Describe the bug : after I updated the 2020.112.0 update and restart the game. the tournament client side get black screen, but the main game still works fine no issue.

Screenshots or videos showing encountered issue:

osu!lazer version: since 2020.112.0

Logs:
performance.log

[peppy]

Could you please upload your bracket.json file? Also, could you try moving or renaming it and see if the client opens without it present?

[Mirageasuka]

Bracket.json file : https://puu.sh/F1thz/bb9c87274a.rar
renaming and moving doesn't help either, I tried.

[peppy]

Do you have a runtime.log?

[Mirageasuka]

runtime.log

[peppy]

Did you manually edit the bracket file? The issue is these empty beatmaps:

  "Rounds": [
    {
      "Name": "Quarterfinals",
      "Description": "Best of 9",
      "BestOf": 9,
      "Beatmaps": [
        {},
        {},
        {},
        {},
        {},
        {},
        {},
        {},
        {},
        {}
      ],

And it should 100% be solved by moving the bracket away.

[Mirageasuka]

okay now It works fine after move the bracket away, but I didn't manually edit the bracket file.
more info : I just add a new round but I didn't input the map id. I guess this might be the problem