I have the same effect since the last Lego App update. Lego changed some function ports. You can see the necessary changes for pylgbst here:
https://github.com/undera/pylgbst/commit/990ccdb2687d7e6960c5fa7ac7815f01d3db0934#diff-243b2175e72e0b65f68fefc7d66a0f64
So we need an update to S2Bot...