Caught exception while running sniff()

[d15c0]

I keep getting an error..

Caught exception while running sniff() 'utf8' codec can't decode byte 0xfd in position 0: invalid start byte

Caught exception while running sniff() 'utf8' codec can't decode bytes in position 1-2: invalid continuation byte

Caught exception while running sniff() 'utf8' codec can't decode byte 0x89 in position 1: invalid start byte