ShellyForHASS: 0.1.5 'charmap' codec can't decode byte

I’ve recently updated to v0.1.5 and I noticed this error this morning:

Error receiving CoAP UDP, 'charmap' codec can't decode byte 0x90 in position 538: character maps to <undefined>, Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/pyShelly/coap.py", line 157, in _loop
    payload = s(data[pos + 1:])
  File "/usr/local/lib/python3.7/site-packages/pyShelly/compat.py", line 23, in s
    return str(x, 'cp1252')
  File "/usr/local/lib/python3.7/encodings/cp1252.py", line 15, in decode
    return codecs.charmap_decode(input,errors,decoding_table)
UnicodeDecodeError: 'charmap' codec can't decode byte 0x90 in position 538: character maps to <undefined>

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/pyShelly/coap.py", line 157, in _loop
    payload = s(data[pos + 1:])
  File "/usr/local/lib/python3.7/site-packages/pyShelly/compat.py", line 23, in s
    return str(x, 'cp1252')
  File "/usr/local/lib/python3.7/encodings/cp1252.py", line 15, in decode
    return codecs.charmap_decode(input,errors,decoding_table)
UnicodeDecodeError: 'charmap' codec can't decode byte 0x90 in position 538: character maps to <undefined>

I’ve never gotten this error before, I have 3 Shelly 2.5 in roller shutter mode. They all still seem to work fine though.

Any thoughts?