Update src/systems/callbacks.jl

Co-authored-by: Aayush Sabharwal <aayush.sabharwal@gmail.com>

Author: vyudu

src/systems/callbacks.jl

@@ -629,7 +629,7 @@ function compile_condition(
         (u, t, integ) -> f_oop(u, parameter_values(integ), t)
     else
         function (u, t, integ)
-            if DiffEqBase.isinplace(integ.sol.prob)
+            if DiffEqBase.isinplace(SciMLBase.get_sol(integ).prob)
                 tmp, = DiffEqBase.get_tmp_cache(integ)
                 f_iip(tmp, u, parameter_values(integ), t)
                 tmp[1]