```KeyError No class found for dispatch key process in regis

Question

```KeyError No class found for dispatch key process in registry for type Block prefect``` Getting this error when a flow run is submitted to the agent The error causes the agent process to terminate as well This is the corresponding deployment yaml file ```infrastructure type process env labels name null command python m prefect engine stream output true block type slug Process```

Malavika S Menon · Answer

Any help on this would be appreciated this is the full traceback of the error Also encounter this error when running prefect deployment inspect ```Traceback most recent call last File root Envs healthgraph lib python3 8 site packages prefect cli utilities py line 41 in wrapper return fn args kwargs File root Envs healthgraph lib python3 8 site packages prefect utilities asyncutils py line 255 in coroutine wrapper return call File root Envs healthgraph lib python3 8 site packages prefect internal concurrency calls py line 383 in call return self result File root Envs healthgraph lib python3 8 site packages prefect internal concurrency calls py line 283 in result return self future result timeout=timeout File root Envs healthgraph lib python3 8 site packages prefect internal concurrency calls py line 169 in result return self get result File usr lib python3 8 concurrent futures base py line 389 in get result raise self exception File root Envs healthgraph lib python3 8 site packages prefect internal concurrency calls py line 346 in run async result = await coro File root Envs healthgraph lib python3 8 site packages prefect cli deployment py line 283 in inspect deployment json infrastructure = Block from block document File root Envs healthgraph lib python3 8 site packages prefect blocks core py line 618 in from block document else cls get block class from schema block document block schema File root Envs healthgraph lib python3 8 site packages prefect blocks core py line 672 in get block class from schema return cls get block class from key block schema to key schema File root Envs healthgraph lib python3 8 site packages prefect blocks core py line 683 in get block class from key return lookup type cls key File root Envs healthgraph lib python3 8 site packages prefect utilities dispatch py line 185 in lookup type raise KeyError KeyError No class found for dispatch key process in registry for type Block An exception occurred ```