hp latex 365 Trailing cable is not connected

How do I fix this? What phone number should I call to find someone who could help me

Hi @signsnow456,

It looks like a hardware issue. Please get in touch with HP Support to check the printer. There are parts that need to be checked inside and might need replacement. Here you can find a helpful link for the same: https://www8.hp.com/us/en/contact-hp/contact.html. I hope it helps.