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fix: improve error message when node type is missing (#12194)

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- Change error type from 'invalid_prompt' to 'missing_node_type' for frontend detection
- Add extra_info with node_id, class_type, and node_title (from _meta.title)
- Improve user-facing message: 'Node X not found. The custom node may not be installed.'
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Christian Byrne 2026-01-31 22:13:48 -08:00 committed by GitHub
parent f8acd9c402
commit 32621c6a11
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1 changed files with 18 additions and 6 deletions
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24
execution.py
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@ -1014,22 +1014,34 @@ async def validate_prompt(prompt_id, prompt, partial_execution_list: Union[list[
outputs = set()
for x in prompt:
if 'class_type' not in prompt[x]:
node_data = prompt[x]
node_title = node_data.get('_meta', {}).get('title')
error = {
"type": "invalid_prompt",
"message": "Cannot execute because a node is missing the class_type property.",
"type": "missing_node_type",
"message": f"Node '{node_title or f'ID #{x}'}' has no class_type. The workflow may be corrupted or a custom node is missing.",
"details": f"Node ID '#{x}'",
"extra_info": {}
"extra_info": {
"node_id": x,
"class_type": None,
"node_title": node_title
}
}
return (False, error, [], {})
class_type = prompt[x]['class_type']
class_ = nodes.NODE_CLASS_MAPPINGS.get(class_type, None)
if class_ is None:
node_data = prompt[x]
node_title = node_data.get('_meta', {}).get('title', class_type)
error = {
"type": "invalid_prompt",
"message": f"Cannot execute because node {class_type} does not exist.",
"type": "missing_node_type",
"message": f"Node '{node_title}' not found. The custom node may not be installed.",
"details": f"Node ID '#{x}'",
"extra_info": {}
"extra_info": {
"node_id": x,
"class_type": class_type,
"node_title": node_title
}
}
return (False, error, [], {})