Vscode cannot add breakpoint

the manual says to add it to the left of the line number. I don"t know where to set it. There is no space on the left.
when you click, you will switch to the activity bar on the left

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Oct.26,2021

find the cause and set
/ / Controls visibility of the glyph margin
"editor.glyphMargin": false,


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-64f5-1c1615a-32fb7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1c1615a-32fb7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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