EasyUse will try to send_sync during module initialization, which is invalid. This tolerates such calls.

comfy/component_model/executor_types.py

@@ -130,7 +130,7 @@ class ExecutorToClientProgress(Protocol):
     last_prompt_id: Optional[str]
 
     @property
-    def receive_all_progress_notifications(self):
+    def receive_all_progress_notifications(self) -> bool:
         """
         Set to true if this should receive progress bar updates, in addition to the standard execution lifecycle messages
         :return:

comfy/distributed/server_stub.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import uuid
-from typing import Literal, Optional
+from typing import Literal, Optional, Union
 
 from ..component_model.executor_types import ExecutorToClientProgress, StatusMessage, ExecutingMessage
 from ..component_model.queue_types import BinaryEventTypes
@@ -25,7 +25,7 @@ class ServerStub(ExecutorToClientProgress):
     def queue_updated(self, queue_remaining: Optional[int] = None):
         pass
 
-    def send_progress_text(self, text: str, node_id: str = None):
+    def send_progress_text(self, text: Union[bytes, bytearray, str], node_id: str, sid=None):
         pass
 
     @property

comfy/nodes/vanilla_node_importing.py

@@ -1,11 +1,11 @@
 from __future__ import annotations
 
+import fnmatch
 import importlib
 import importlib.util
 import logging
 import os
 import sys
-import fnmatch
 import time
 import types
 from contextlib import contextmanager
@@ -18,6 +18,7 @@ from .comfyui_v3_package_imports import _comfy_entrypoint_upstream_v3_imports
 from .package_typing import ExportedNodes
 from ..cmd import folder_paths
 from ..component_model.plugins import prompt_server_instance_routes
+from ..distributed.server_stub import ServerStub
 
 logger = logging.getLogger(__name__)
 
@@ -43,8 +44,9 @@ class StreamToLogger:
         pass
 
 
-class _PromptServerStub:
+class _PromptServerStub(ServerStub):
     def __init__(self):
+        super().__init__()
         self.routes = prompt_server_instance_routes
         self.on_prompt_handlers = []
 
@@ -52,6 +54,9 @@ class _PromptServerStub:
         # todo: these need to be added to a real prompt server if the loading order is behaving in a complex way
         self.on_prompt_handlers.append(handler)
 
+    def send_sync(self, *args, **kwargs):
+        logger.warning(f"Node tried to send a message over the websocket while importing, args={args} kwargs={kwargs}")
+
 
 def _vanilla_load_importing_execute_prestartup_script(node_paths: Iterable[str]) -> None:
     def execute_script(script_path):