differential equations – Non-autonomous ODE uses NDSolve, error: Step Size is effectively zero; The singularity or rigidity of the system is suspected.

I have seen this error NDSolve :: ndsz many times when I use NDSolve To obtain the solution of a non-autonomous ODE. I try but everything has failed. Thanks, Here is the code, very simple.

    s = NDSolve[{x'
Y
X[0] == 1, and[0] == 1}, {x