A simple first thing to check is power. Based on the symptoms and the community reply, the camera may be struggling under the extra load of operating an automatic-aperture/autofocus lens, which could cause the mirror/shutter cycle to stall and give a dark frame.

Try this before assuming a mechanical fault:

• Fully recharge the battery.
• If possible, test with a different known-good battery.
• If the battery is old, weak, or hasn’t been holding charge well, it may no longer provide enough power during the exposure cycle.

The fact that it works with manual lenses and with no lens attached supports checking battery/power first, because those situations can place less demand on the camera. If a fresh battery does not change the behavior, then a service issue is more likely, but battery testing is the easiest and cheapest first step.