“why this error comes .how to fix this .need help”
Similar exceptions reported here redis.exceptions.ResponseError: value is not an integer or out of range
and here Facing redis exception error when select item in request for quotation
Please share the full traceback; that helps trace what is going on.
EDIT: here’s one with a traceback Unable to find exchange rate for USD to CAD for key date 2020-01-07. Please create a Currency Exchange record manually - #4 by Samuel_Gervais