Why can't videos be played when using vedio tags in react scaffolding?

1. I use react to write components, and the src property of source,source wrapped with vedio tags is the MP4 path. There are only video controls on the page, but the video cannot be played.
2.

            <video width="620" height="200"controls>
                <source src="../mp4/FAC-vortex-anim-hr-00.mp4"/>
                Your browser does not support the video tag
            </video>
Feb.27,2021

put this file require in.
< source src= {require ('.. / mp4/FAC-vortex-anim-hr-00.mp4')} / >

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-64f5-1bddf6a-30906.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bddf6a-30906.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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