=== === Reason: {exception,
                     {badmatch,{error,not_found}},
                     [{rabbit_shovel_dyn_worker_sup_sup,
                          stop_and_delete_child,1,
                          [{file,"src/rabbit_shovel_dyn_worker_sup_sup.erl"},
                           {line,102}]},
                      {rabbit_shovel_dyn_worker_sup_sup,stop_child,1,
                          [{file,"src/rabbit_shovel_dyn_worker_sup_sup.erl"},
                           {line,87}]},
                      {rabbit_shovel_parameters,notify_clear,4,
                          [{file,"src/rabbit_shovel_parameters.erl"},
                           {line,74}]},
                      {rabbit_runtime_parameters,clear,4,[]}]}