Write a poll with redux-saga. What is the problem with writing like this?

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if the request url is an empty string, the poll will continue. If it is not empty, the poll will end. Where is the error in writing this?
Thank you

Mar.14,2021
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-64f5-1e5cf1c-43c9d.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e5cf1c-43c9d.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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