flutter: Isolate error: CactusException: Failed to initialize multimodal with status: -2

[826327700]

test() async {
        final vlm = CactusVLM();
        await vlm.init(
            modelFilename: 'Qwen2.5-Omni-3B-Q4_K_M.gguf',
            mmprojFilename: 'mmproj-Qwen2.5-Omni-3B-Q8_0.gguf',
        );
        var response=await vlm.completion([
            ChatMessage(role: 'user', content: 'hello'),
        ]);
        print(response.text);
    }

I ran it on the iOS simulator and got the following log:
flutter: Isolate error: CactusException: Failed to initialize multimodal with status: -2。 why ?

[adityavarmaaa]

CactusVLM fails to initialize with status -2, often due to missing model files or bad file paths. Make sure the file names and paths given to the init method match real, accessible files, and in the code, add more detailed logging or error messages when status -2 is returned so users know if it’s a path, permission, or model format issue. Update initialization error handling to surface specific guidance using print statements or dedicated error-messages.