No Internet Connection warning

I have an iPhone 14, OSvs 17.7.

I have a home wifi through Spectrum.

Two days ago I received a warning message on my phone that I was connected to my router, but I was not connected to the Internet. I went in to System Settings, Wifi and sure enough, under my wifi connection was an error message No Internet Connection.

I can access the internet through my cell connection.

I have multiple devices at home including a Mac and an iPad. Both of those devices are accessing the Internet through my wifi connection as usual.

When I go to work, I can access my work wifi and access the Internet as usual through that network on my phone.

I have checked my wifi and network setting for my phone and compared them to my Mac and iPad. I cannot find any settings that would cause my phone to hit the router but not reach out to the Internet. I cannot understand why my other devices work or why my phone works as expected on other wifi networks.

I have done the normal things: turned off and restarted the phone; forgot and re-signed into the wifi connection; done cold restarts on my router and cable modem.

Any other suggestions as to why this is happening and how to address it?