Stormwater Catch basin fault

In this video you can see a catch basin to manhole connection.
But there is a technical fault that I am asking you guys see the video and tell mei what's wrong in this connection.
There is a spill over wall also you can see

[@shahidkiani9170]

Can you find out a mistake /fault in stormwater Catch basin to manhole connection?

[@kheder91]

the level of out let !