Error in solve.default(crossprod(WX, t.CP.WX.A2))

Hallo, I am trying to run a gmm regression on a panel data and keep on getting the following error:

Error in solve.default(crossprod(WX, t.CP.WX.A2)) :
system is computationally singular: reciprocal condition number = 1.77315e-25

Please assist

Thanks