Unable to copy attribute attribute error - AVSpeechSynthesizer

Question

My console receives spam with these errors:

[MobileAssetError: 1] Unable to copy asset attributes

Failed to get the attribute "LocalURL": Error Domain = MobileAssetError Code = 1 "Unable to copy asset attributes" UserInfo = {NSDescription = Unable to copy asset attributes}

Copy comparable assets answer: XPC_TYPE_DICTIONARY {count = 2, transaction: 0, voucher = 0x0, contents = "Assets" =>: {length = 1237 bytes, contents = 0x62706c6973743030d4010203040506636458247665727369 ...} "Result" =>: 0}

Copy attribute attributes response: XPC_TYPE_DICTIONARY {count = 1, transaction: 0, voucher = 0x0, contents = "Result" =>: 1}

This is very annoying when it starts console distribution. I read that something like disabling OS_ACTIVITY_MODE can suppress these logs, but I would like to find its source and handle it properly ...

This is because I use AVSpeechSynthesizer, for example:

  self.synthesizer = [[AVSpeechSynthesizer alloc] init];
  self.synthesizer setDelegate:self];
  self.speedCameraAhead = [AVSpeechUtterance speechUtteranceWithString:NSLocalizedString(@"Caution: Blah blah blah!",nil)];
  [self.speedCameraAhead setRate:0.5f];