How does App Manifest work on the pc side?

Thank you for opening a pwa, on the mobile phone, and the screen starts again, and the Manifest file takes effect. But opening it on the PC side has no effect. Doesn"t Google already support pc?

Manifest pwa
Aug.31,2021

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bde6c6-30c4e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bde6c6-30c4e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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