mlc-llm: [Bug] Could not convert TVM object of type runtime.Closure to a string.

🐛 Bug

To Reproduce

Steps to reproduce the behavior:

Calling chat.reload(self.modelLib, modelPath: modelPath, appConfigJson: "")

produces the following crash:

Check failed: (IsObjectRef<tvm::runtime::String>()) is false: Could not convert TVM object of type runtime.Closure to a string.
Stack trace:
0x000000010009ecc4 tvm::runtime::detail::LogFatal::Entry::Finalize() + 68
0x000000010009ec80 tvm::runtime::detail::LogFatal::Entry::Finalize() + 0
0x000000010009dcf4 __clang_call_terminate + 0
0x00000001000acbfc tvm::runtime::TVMArgValue::operator std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>() const + 716
0x00000001000ac318 tvm::runtime::PackedFuncValueConverter<tvm::runtime::String>::From(tvm::runtime::TVMArgValue const&) + 104
0x00000001000b5928 mlc::llm::LLMChatModule::GetFunction(tvm::runtime::String const&, tvm::runtime::ObjectPtr<tvm::runtime::Object> const&)::'lambda'(tvm::runtime::TVMArgs, tvm::runtime::TVMRetValue*)::operator()(tvm::runtime::TVMArgs, tvm::runtime::TVMRetValue*) const + 724
0x00000001000b5648 tvm::runtime::PackedFuncObj::Extractor<tvm::runtime::PackedFuncSubObj<mlc::llm::LLMChatModule::GetFunction(tvm::runtime::String const&, tvm::runtime::ObjectPtr<tvm::runtime::Object> const&)::'lambda'(tvm::runtime::TVMArgs, tvm::runtime::TVMRetValue*)>>::Call(tvm::runtime::PackedFuncObj const*, tvm::runtime::TVMArgs, tvm::runtime::TVMRetValue*) + 40
tvm::runtime::TVMRetValue tvm::runtime::PackedFunc::operator()<tvm::runtime::Module&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>&>(tvm::runtime::Module&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>&) const + 260
-[ChatModule reload:modelPath:appConfigJson:] + 408

Environment

• Platform (e.g. WebGPU/Vulkan/IOS/Android/CUDA):iOS
• Operating system (e.g. Ubuntu/Windows/MacOS/…):MacOS
• Device (e.g. iPhone 12 Pro, PC+RTX 3090, …) iPhone14 Pro
• How you installed MLC-LLM (conda, source): source
• How you installed TVM-Unity (pip, source): pip
• Python version (e.g. 3.10): 3.8
• GPU driver version (if applicable):
• CUDA/cuDNN version (if applicable):
• TVM Unity Hash Tag (python -c "import tvm; print('\n'.join(f'{k}: {v}' for k, v in tvm.support.libinfo().items()))", applicable if you compile models):
• Any other relevant information:

Additional context