NullReferenceException errors

I'm sure it was this change to the file that caused the problem:

• The scene runs normally in Unity engine

• However, when the project is packaged as a PC game pack or Apk file, there are many NullReferenceException errors when running into this scene (map1.unity)

• It was a bug in a project I was working on with someone else, and we couldn't do anything about it

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Would you please tell me how to solve this problem and the possible cause of the problem, thank you very much

Here is the github repository address for the change： https://github.com/ncuhome/dream-of-the-mirror/commit/292af385781aab52db9a59fed7160adc3703dc80

Here is the error log： Player log.zip