My connection has encountered an error. Can someone help me

Status: Unable to connect
Error reason: Failed DNS Lookup Check
Error description: Could not connect because of DNS lookup failure.
Learn more: Client errors · Cloudflare Zero Trust docs

Hello, I would suggest you to check if there is any firewall rules that may be blocking your DNS requests, to make sure if the DNS traffic is allowed. Also, see if the device has a stable connection accessing other websites to confirm that the issue is specific to the DNS lookup.

I’m sure my firewall is fine because I was still using it yesterday and suddenly couldn’t connect today. Is there anything else that could cause this problem to occur