Problems with configuring multiple ssh-key locally

I want to configure multiple ssh-key, locally. What"s wrong with the first line configuration? Why can"t you always connect?
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Github git ssh-key
Aug.27,2021

the file format is not quite right. Try removing the space in front of each line.

  1. File encoding problem, you have more BOM
  2. enter a problem. A space is required before Host

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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-64f5-1e48b88-44cca.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e48b88-44cca.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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