diff --git a/rasa_sdk/grpc_server.py b/rasa_sdk/grpc_server.py
index 5fce7dc8..27796fe7 100644
--- a/rasa_sdk/grpc_server.py
+++ b/rasa_sdk/grpc_server.py
@@ -5,7 +5,6 @@
 import asyncio
 
 import grpc
-import utils
 import logging
 import ssl
 import types
@@ -36,11 +35,14 @@
     get_tracer_and_context,
     TracerProvider,
 )
+from rasa_sdk.utils import check_version_compatibility, number_of_sanic_workers
 
 logger = logging.getLogger(__name__)
 
 
-class ActionServerWebhook(action_webhook_pb2_grpc.ActionServerWebhookServicer):
+class GRPCActionServerWebhook(action_webhook_pb2_grpc.ActionServerWebhookServicer):
+    """Runs webhook RPC which is served through gRPC server."""
+
     def __init__(
         self,
         executor: ActionExecutor,
@@ -65,13 +67,15 @@ async def webhook(
         Args:
             request: The webhook request.
             context: The context of the request.
+
+        Returns:
+            gRPC response.
         """
-        await asyncio.sleep(50)
         tracer, tracer_context, span_name = get_tracer_and_context(
             self.tracer_provider, request
         )
         with tracer.start_as_current_span(span_name, context=tracer_context):
-            utils.check_version_compatibility(request.version)
+            check_version_compatibility(request.version)
             try:
                 action_call = MessageToDict(request, preserving_proto_field_name=True)
                 result = await self.executor.run(action_call)
@@ -121,6 +125,7 @@ def initialise_interrupts(server: grpc.aio.Server) -> None:
     """Initialise handlers for kernel signal interrupts."""
 
     async def handle_sigint(signal_received: int):
+        """Handle the received signal."""
         logger.info(
             f"Received {get_signal_name(signal_received)} signal."
             "Stopping gRPC server..."
@@ -155,7 +160,7 @@ async def run_grpc(
         ssl_password: Password for the SSL key file.
         endpoints: Path to the endpoints file.
     """
-    workers = utils.number_of_sanic_workers()
+    workers = number_of_sanic_workers()
     server = aio.server(futures.ThreadPoolExecutor(max_workers=workers))
     initialise_interrupts(server)
     executor = ActionExecutor()
@@ -163,7 +168,7 @@ async def run_grpc(
     # tracer_provider = get_tracer_provider(endpoints)
     tracer_provider = None
     action_webhook_pb2_grpc.add_ActionServerWebhookServicer_to_server(
-        ActionServerWebhook(executor, tracer_provider), server
+        GRPCActionServerWebhook(executor, tracer_provider), server
     )
     if ssl_certificate and ssl_keyfile:
         # Use SSL/TLS if certificate and key are provided