Intel DC P3600 reports 0 namespaces and health status *ASSERT_FFFF0194 SL

As the title says, my Intel DC P3600 reports 0 valid namespaces, and health status *ASSERT_FFFF0194  SL.

Registers are readable/writable, and identify controller succeeds (from which num ns and health status is read).

All other commands fails with Generic Error: Internal Device Error (SCT: 0, SC: 6).

As per the specification, an async event is posted on internal errors, and is fetched with an async event request. The async event request also fails with internal device error.

Is there any way of fixing this?