Problems with new iMac 27 5K

Dear Kind Souls,

I've had my new iMac for less than 24 hours and its frozen and restarted (on its own) three times.

Yesterday, I reached out to Apple Support. They suggested some troubleshooting articles:

#1 -- OS X: When your computer spontaneously restarts...

#2 -- macOS Sierra: If your Mac restarts and a message appears

#3 -- How to reinstall macOS.

Before I work my way through these troubleshooting activities, I was hoping that someone might be able to provide insight or help decoding the following panic report I saved from the first instance my iMac froze/restarted on its own.

panic(cpu 4 caller 0xffffff...1): nvme: "Fatal error occurred. . NAND Vendor=0x0, DRAM Vendor=0x0, SSD Capacity=0GB, FW Revision=CXS7CA0Q\n"@/BuildRoot/Library/Caches/com.apple.xbs/Sources/IONVMeFami ly/IONVMeFamily-234.60.2/IONVMeController.cpp:4949

Backtrace (CPU 4), Frame : Return Address

0xffffff...c0 : 0xffffff...3c

0xffffff...40 : 0xffffff...e1

0xffffff...90 : 0xffffff...20

0xffffff...00 : 0xffffff...9a

0xffffff...b0 : 0xffffff...f7

Kernel Extensions in backtrace:

com.apple.iokit.IONVMeFamily(2.1)[F2...]@0xffffff...ab000->0xffffff...defff

dependency: com.apple.driver.AppleMobileFileIntegrity(1.0.5)[A6...]@0xffffff...af000

dependency: com.apple.iokit.IOPCIFamily(2.9)[1A...]@0xffffff...32000

dependency: com.apple.driver.AppleEFINVRAM(2.1)[A8...]@0xffffff...a0000

dependency: com.apple.iokit.IOStorageFamily(2.1)[F9...]@0xffffff...50000

dependency: com.apple.iokit.IOReportFamily(31)[B1...]@0xffffff...94000

BSD process name corresponding to current thread: kernel_task

Mac OS version:

16F2073

Kernel version: ...

Darwin Kernel Version 16.6.0: Fri Apr 14 16:13:31 PDT 2017; root:xnu-3789.60.24~4/RELEASE_X86_64

Kernel UUID: ...

Kernel slide: ...

Kernel text base: ...

__HIB text base: ...

System model name: iMac18,3

Apple Support also recommend that I return/exchange the iMac before the 14 day return deadline if the problem persists.