QT error expected: ‘before’ qmessagelogger‘

QT error expected: ‘before’ qmessagelogger ‘?

Metaphysical problems:
on November 4, 2021, compilation repeatedly reported errors. Expected ‘:’ before ‘qmessagelogger’:

Unable to find the reason, and then waited for a while, this error suddenly appeared:

Add a semicolon “:” and compile it. It’s very interesting…

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