Yes, it's a problem with the NVMe device:
Aug 28 04:36:36 Jefflix kernel: nvme nvme0: controller is down; will reset: CSTS=0xffffffff, PCI_STATUS=0xffff
Aug 28 04:36:36 Jefflix kernel: print_req_error: I/O error, dev nvme0n1, sector 585987336
Aug 28 04:36:36 Jefflix kernel: print_req_error: I/O error, dev nvme0n1, sector 23321408
Aug 28 04:36:36 Jefflix kernel: print_req_error: I/O error, dev nvme0n1, sector 167618128
Aug 28 04:36:36 Jefflix kernel: print_req_error: I/O error, dev nvme0n1, sector 320839472
Aug 28 04:36:36 Jefflix kernel: print_req_error: I/O error, dev nvme0n1, sector 320839488
Aug 28 04:36:36 Jefflix kernel: nvme 0000:01:00.0: Refused to change power state, currently in D3
Aug 28 04:36:36 Jefflix kernel: nvme nvme0: Removing after probe failure status: -19
But it doesn't necessarily mean it's dying, some NVMe devices have issues with power states on Linux, try this, on the main GUI page click on flash, scroll down to "Syslinux Configuration", make sure it's set to "menu view" (on the top right) and add this to your default boot option, between "append" and before "initrd=/bzroot"
nvme_core.default_ps_max_latency_us=0
Reboot and see if it makes a difference.