1016 Error not always

Hello,
I am facing a problem. I am using Cloudflare free service for 1 year.
Currently, When I am opening my site it is showing 1016 Error but not always sometimes it is showing 1016 error and sometimes site is opening.
Please help me to solve it.
Thanks

What is the website? What A or CNAME record do you have for it in your DNS?

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website is www.miceducation.online
CNAME is in attachment

1016 (click the number for more info) happens when you access a URL that is CNAMEd to an external resource, and the external domain cannot be resolved.

To that end, it may be worth checking with the provider on the other end of the CNAME to see whether they had any DNS issues lately.

As @erisa-cf suggests, this is a problem with the provider on the end of the CNAME. Your CNAME resolves to records that in turn resolve to themselves, or don’t resolve to an IP.

dig +short nhu23qt5rw05zfaksefa2w.on.drv.tw
lbx-pri.drv.tw.

dig +short lbx-pri.drv.tw
ali2-pri.drv.tw.
lbx-pri.drv.tw.

dig +short ali2-pri.drv.tw
lbx-pri.drv.tw.
ali2-pri.drv.tw.

dig +short nhu23qt5rw05zfaksefa2w.on.drv.tw cname
lbx-pri.drv.tw.

dig +short lbx-pri.drv.tw cname
ali2-pri.drv.tw.

dig +short ali2-pri-drv.tw cname
(nothing)

dig +short ali2-pri-drv.tw a
(nothing)

dig +short ali2-pri-drv.tw aaaa
(nothing)
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