There were problems with PCIe bus on A3720 and with lot of patches to pci-aardvark.c PCIe controller driver it could be more stable. About year or two ago I tested in Espressobin 3 or 4 randomly chosen PCIe-based NVMe M.2 disks which I bought in local shop and all worked fine. From your log it looks like an NVMe error, not the PCIe. So I guess it would not be related to PCIe bus (and its wiring or adapter). So try to choose different NVMe disk. Maybe you hit some NVMe related issue...