Question: Can't execute the result

> dsol1 := dsolve({-(diff(y[1](t), t, t))*sqrt(y[1](t)^2+y[2](t)^2)^3/y[1](t) = 0, -(diff(y[2](t), t, t))*sqrt(y[1](t)^2+y[2](t)^2)^3/y[1](t) = 0, y[1](0) = 1, y[2](0) = 0, (D(y[1]))(0) = 0, (D(y[2]))(0) = 1});                             dsol1:= >

Why the result can't execute?

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