The http code obtained by sending a get request using curl in Laravel is 0

it"s strange that when I use dd (), to get exit, the connection I get is returned, but when I print using normal var_dump, the data that this link get to is empty. I don"t know why. It is a request operated in Wechat browser

Mar.10,2021
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-64f5-1b3508b-2b7aa.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3508b-2b7aa.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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