Skywriter remote I/O error

when i use the ./ code for skywriter i get the following error:

Traceback (most recent call last):
File “/home/pi/Pimoroni/skywriter/examples/”, line 2, in
import skywriter
File “/usr/lib/python3/dist-packages/”, line 502, in
i2c.write_i2c_block_data(SW_ADDR, 0xa1, [0b00000000, 0b00011111, 0b00000000, 0b00011111])
OSError: [Errno 121] Remote I/O error

the wiring is all good(i am using a black hat hack3r if that makes any difference) and when i do sudo i2c detect -y 1 i get no result…

Can anyone help me??