textract (>=1.6.5,<2.0.0) requires xlrd (>=1.2.0,<1.3.0).

[dickreuter]

Because no versions of textract match >1.6.5,<2.0.0
and textract (1.6.5) depends on xlrd (>=1.2.0,<1.3.0), textract (>=1.6.5,<2.0.0) requires xlrd (>=1.2.0,<1.3.0).
So, because sparkai-chatbot depends on both xlrd (^2.0.1) and textract (^1.6.5), version solving failed.