i have a differential equation like below
with(DynamicSystems):

with(DETools):
ivs3:=[y(0)=100,y(0)=250,y(0)=800]:
DEplot(sys1,y(t),t=0..1000,ivs3);
i tried to plot this diff equation but received an error message:
Warning, plot may be incomplete, the following error(s) were issued:
cannot evaluate the solution further right of .62568996, probably a singularity
Warning, plot may be incomplete, the following error(s) were issued:
cannot evaluate the solution further right of 3.1899535, probably a singularity
Warning, plot may be incomplete. the following error(s) were issued:
cannot evaluate the solution further right of 6.5800520, probably a singularity
I NEED HELP PLEASE.