Line breaks in textarea are not displayed

if you want to implement a preview function, what you type in textarea will be displayed in the preview module. But it is found that line breaks and spaces are ignored. How to solve this problem?

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Jun.04,2021

Preview module style try adding white-space: pre;

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-64f5-1e5fc1c-45846.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e5fc1c-45846.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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