How does noVNC connect virtual machines under Xenserver?

noVNC cannot connect to the virtual machine under Xen?

clipboard.png

the platform version of the problem and what methods you have tried

latest version of noVNC
xenserver6.1

what result do you expect? What is the error message actually seen?

error message is shown in figure
according to officials, the novnc connection to the back-end VNC server only wraps the OpenStack
XenServer virtual machine VNC console connection. How to further configure? Or how to customize it to support it?

Xen
Jun.16,2022
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-64f5-1b3a621-2b757.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3a621-2b757.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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