Error using Quadprog toolbox

At some point of ioteration, I am getting this error:

Error using ipqpdense

The interior-point-convex algorithm requires all objective and constraint values to be finite.

How to remove this error, if anyone can give me any suggestion?

[Torsten]

By checking your objective and your constraints and identifying the point in the solution process where one of them or both return Inf, -Inf or NaN values.

[Pallov Anand]

Ok thanks