Billionmail/BillionMail · warning

Content cannot be empty

Error message

Content cannot be empty

What it means

Chat validates its content argument and rejects whitespace-only or empty messages before doing any supplier/model lookup. This prevents sending empty prompts to the AI supplier. The message is a plain errors.New value, so callers must compare by string, not errors.Is with a sentinel.

Source

Thrown at core/internal/service/askai/chat.go:246

	return chatList, nil
}

// GetChatInfo retrieves the chat information for a given chat ID
// This function should handle the logic for loading the chat information and return the ChatInfo struct and any error encountered
func GetChatInfo(chatId string) (*ChatInfo, error) {
	chatInfo, err := GetChat(chatId)
	if err != nil {
		return nil, err
	}
	chatInfo.Messages = GetMessages(chatId)
	return chatInfo, nil
}

func Chat(ctx context.Context, chatId string, supplierName string, modelId string, content string, isText bool) error {
	content = strings.TrimSpace(content)
	if content == "" {
		return errors.New("Content cannot be empty")
	}

	supplierInfo, err := GetSupplierConfig(supplierName)
	if err != nil {
		return errors.New("Supplier not found")
	}

	modelInfo := GetModelInfo(supplierName, modelId)
	if modelInfo == nil {
		return errors.New("Model not found")
	}

	// Check if the chat is already active
	chatInfo, err := GetChat(chatId)
	if err != nil {
		return errors.New("Chat not found")
	}
	// set the chat information

View on GitHub (pinned to fc36c76c05)

Solutions

1. Check content length after trimming before calling Chat and show a user-facing message instead
2. Ensure the UI blocks submission of empty/whitespace-only messages
3. If content comes from another function, verify that function's return value is non-empty

Example fix

// before
err := askai.Chat(ctx, chatId, supplier, model, userInput, true)
// after
text := strings.TrimSpace(userInput)
if text == "" {
    return errors.New("please enter a message")
}
err := askai.Chat(ctx, chatId, supplier, model, text, true)

if strings.TrimSpace(content) == "" {
    return errors.New("message is empty")
}

When it happens

Trigger: Calling Chat(ctx, chatId, supplierName, modelId, "" or " ", isText) — content trims to empty via strings.TrimSpace.

Common situations: Frontend sends an empty input box submission; a pipeline passes a variable that was never populated; trimming user input upstream leaves an empty string that is still forwarded to Chat.

Related errors

• no scenes provided
• required column 'email' not found
• You cannot create more than 5000 batches
• No log files found in the given date range
• invalid start_date: %v

AI-assisted analysis of Billionmail/BillionMail@fc36c76c05 (2026-09-05). Data as JSON: /api/errors/0b3f2ff87482169c. Report an issue: GitHub.