use p boundary value from example project

I don't know why that makes sense but it works and the previous option didn't (some error)

openfoam/run/flowAroundCylinder/0/p

@@ -28,9 +28,9 @@ boundaryField
 
     outlet
     {
-        type            fixedFluxPressure;
-        /* type            fixedValue;  */
-        /* value           uniform 0;  */
+        /* type            fixedFluxPressure;  */
+        type            fixedValue;
+        value           uniform 0;
     }
 
     wall  // both walls (outer walls) and cylinder