Unable to program FPGA on Linux Mint

[ChrisJones79]

I read through the README and was able to upload the 'turn_on_power' project to the ESP32. I see the LEDs behaving appropriately and saw that the terminal in platformio reported a successful programming. Now, I have opened the Gowin IDE and all has compiled (it was already) and the programmer opens, as expected.

Here is the log from the programmer, while trying to upload to the FPGA. I do have the USB-C connected to the FPGA-JTAG port, too.

Info:	Cable found:  Gowin USB Cable(GWU2X)/0/17/null (USB location:17)
Info:	Cost 0.02 second(s)
:	 
Info:	Cable found:  Gowin USB Cable(GWU2X)/0/17/null (USB location:17)
Info:	Cost 0.01 second(s)
:	 
Info:	Target Cable: Gowin USB Cable(GWU2X)/0/17/[email protected] MHz
Info:	Target Device: GW1NSR-4C(0x0100981B)
Info:	Operation "SRAM Program" for device#1...
Error:	Cable open failed.
Info:	Cost 0.0 second(s)
:	 
Info:	Target Cable: Gowin USB Cable(GWU2X)/0/17/[email protected] MHz
Info:	Target Device: GW1NSR-4C(0x0100981B)
Info:	Operation "SRAM Program" for device#1...
Error:	Cable open failed.
Info:	Cost 0.0 second(s)
:
Info:	Scanning!
Info:	Target Cable: Gowin USB Cable(GWU2X)/0/17/[email protected] MHz
Error:	Cable open failed.
Error:	No Gowin devices found!
Info:	Cost 0.02 second(s) 

Also:

$ lsusb
Bus 001 Device 037: ID 33aa:0120 GOWINSEMI GWU2X

and plugging in while udev monitoring:

$ udevadm monitor
KERNEL[675634.337777] add      /devices/pci0000:00/0000:00:14.0/usb1/1-2 (usb)
KERNEL[675634.339741] add      /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0 (usb)
KERNEL[675634.339944] bind     /devices/pci0000:00/0000:00:14.0/usb1/1-2 (usb)
UDEV  [675634.376606] add      /devices/pci0000:00/0000:00:14.0/usb1/1-2 (usb)
UDEV  [675634.378558] add      /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0 (usb)
UDEV  [675634.383025] bind     /devices/pci0000:00/0000:00:14.0/usb1/1-2 (usb)

I don't have any udev rules added for the T-FPGA, and I didn't see anywhere in the repo where the rules would be.

Here's a screenshot from the programmer:

Any help? Thanks.