Repository: open-compass/opencompass
Issue: [Bug] self.config becomes ' ' when using --debug
Root cause: Validation Gap

### Prerequisite

- [x] I have searched [Issues](https://github.com/open-compass/opencompass/issues/) and [Discussions](https://github.com/open-compass/opencompass/discussions) but cannot get the expected help.
- [x] The bug has not been fixed in the [latest version](https://github.com/open-compass/opencompass).

### Type

I'm evaluating with the officially supported tasks/models/datasets.

### Environment

{'CUDA available': True,
 'CUDA_HOME': '/usr/local/cuda',
 'GCC': 'gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0',
 'GPU 0': 'NVIDIA A800-SXM4-80GB',
 'MMEngine': '0.10.7',
 'MUSA available': False,
 'NVCC': 'Cuda compilation tools, release 12.4, V12.4.131',
 'OpenCV': '4.11.0',
 'PyTorch': '2.6.0+cu124',
 'PyTorch compiling details': 'PyTorch built with:\n'
                              '  - GCC 9.3\n'
                              '  - C++ Version: 201703\n'
                              '  - Intel(R) oneAPI Math Kernel Library Version '
                              '2024.2-Product Build 20240605 for Intel(R) 64 '
                              'architecture applications\n'
                              '  - Intel(R) MKL-DNN v3.5.3 (Git Hash '
                              '66f0cb9eb66affd2da3bf5f8d897376f04aae6af)\n'
                              '  - OpenMP 201511 (a.k.a. OpenMP 4.5)\n'
                              '  - LAPACK is enabled (usually provided by '
                              'MKL)\n'
                              '  - NNPACK is enabled\n'
                              '  - CPU capability usage: AVX512\n'
                              '  - CUDA Runtime 12.4\n'
                              '  - NVCC architecture flags: '
                              '-gencode;arch=compute_50,code=sm_50;-gencode;arch=compute_60,code=sm_60;-gencode;arch=compute_70,code=sm_70;-gencode;arch=compute_75,code=sm_75;-gencode;arch=compute_80,code=sm_80;-gencode;arch=compute_86,code=sm_86;-gencode;arch=compute_90,code=sm_90\n'
                              '  - CuDNN 90.1\n'
                              '  - Magma 2.6.1\n'
                              '  - Build settings: BLAS_INFO=mkl, '
                              'BUILD_TYPE=Release, '
                              'COMMIT_SHA=2236df1770800ffea5697b11b0bb0d910b2e59e1, '
                              'CUDA_VERSION=12.4, CUDNN_VERSION=9.1.0, '
                              'CXX_COMPILER=/opt/rh/devtoolset-9/root/usr/bin/c++, '
                              'CXX_FLAGS= -D_GLIBCXX_USE_CXX11_ABI=0 '
                              '-fabi-version=11 -fvisibility-inlines-hidden '
                              '-DUSE_PTHREADPOOL -DNDEBUG -DUSE_KINETO '
                              '-DLIBKINETO_NOROCTRACER -DLIBKINETO_NOXPUPTI=ON '
                              '-DUSE_FBGEMM -DUSE_PYTORCH_QNNPACK '
                              '-DUSE_XNNPACK -DSYMBOLICATE_MOBILE_DEBUG_HANDLE '
                              '-O2 -fPIC -Wall -Wextra -Werror=return-type '
                              '-Werror=non-virtual-dtor -Werror=bool-operation '
                              '-Wnarrowing -Wno-missing-field-initializers '
                              '-Wno-type-limits -Wno-array-bounds '
                              '-Wno-unknown-pragmas -Wno-unused-parameter '
                              '-Wno-strict-overflow -Wno-strict-aliasing '
                              '-Wno-stringop-overflow -Wsuggest-override '
                              '-Wno-psabi -Wno-error=old-style-cast '
                              '-Wno-missing-braces -fdiagnostics-color=always '
                              '-faligned-new -Wno-unused-but-set-variable '
                              '-Wno-maybe-uninitialized -fno-math-errno '
                              '-fno-trapping-math -Werror=format '
                              '-Wno-stringop-overflow, LAPACK_INFO=mkl, '
                              'PERF_WITH_AVX=1, PERF_WITH_AVX2=1, '
                              'TORCH_VERSION=2.6.0, USE_CUDA=ON, USE_CUDNN=ON, '
                              'USE_CUSPARSELT=1, USE_EXCEPTION_PTR=1, '
                              'USE_GFLAGS=OFF, USE_GLOG=OFF, USE_GLOO=ON, '
                              'USE_MKL=ON, USE_MKLDNN=ON, USE_MPI=OFF, '
                              'USE_NCCL=1, USE_NNPACK=ON, USE_OPENMP=ON, '
                              'USE_ROCM=OFF, USE_ROCM_KERNEL_ASSERT=OFF, \n',
 'Python': '3.10.15 (main, Oct  3 2024, 07:27:34) [GCC 11.2.0]',
 'TorchVision': '0.21.0+cu124',
 'lmdeploy': "not installed:No module named 'lmdeploy'",
 'numpy_random_seed': 2147483648,
 'opencompass': '0.4.2+4b57171',
 'sys.platform': 'linux',
 'transformers': '4.51.3'}

### Reproduces the problem - code/configuration sample

```bash
HF_TYPE=chat
DATASETS="ARC_c_gen"
BATCH_SIZE=64
MAX_OUT_LEN=128
EVAL_OUTPUT="./output"
HF_CKP=your_model


python opencompass-main/run.py --datasets ${DATASETS} \
    --hf-type ${HF_TYPE} \
    --hf-path ${HF_CKP} \
    --batch-size ${BATCH_SIZE} \
    --max-out-len ${MAX_OUT_LEN} \
    --hf-num-gpus 1 \
    --work-dir ${EVAL_OUTPUT} \
```


### Reproduces the problem - command or script

bash run.sh

### Reproduces the problem - error message

  File "/hahah/opencompass_250520/opencompass-main/run.py", line 4, in <module>
    main()
  File "/hahah/opencompass_250520/opencompass-main/opencompass/cli/main.py", line 258, in main
    cfg = get_config_from_arg(args)
  File "/hahah/opencompass_250520/opencompass-main/opencompass/utils/run.py", line 97, in get_config_from_arg
    config = Config.fromfile(args.config, format_python_code=False)
  File "/hahah/miniconda3/envs/torch2.3_py3.10/lib/python3.10/site-packages/mmengine/config/config.py", line 461, in fromfile
    cfg_dict, cfg_text, env_variables = Config._file2dict(
  File "/hahah/miniconda3/envs/torch2.3_py3.10/lib/python3.10/site-packages/mmengine/config/config.py", line 856, in _file2dict
    check_file_exist(filename)
  File "/hahah/miniconda3/envs/torch2.3_py3.10/lib/python3.10/site-packages/mmengine/utils/path.py", line 23, in check_file_exist
    raise FileNotFoundError(msg_tmpl.format(filename))
FileNotFoundError: file "/hahah/opencompass_250520/opencompass-main/ " does not exist

### Other information

Quite strange, I printed self.config, it shows `'  '`, instead of Nonetype, when I removed  `--debug`, it turned to Nonetype. After tried several times, once a time, when I added `--debug` again, self.config became Nonetype again. I did not modify anycode instead of the running bash script.

Maybe add `self.config = None if self.config is not None and not str(self.config).strip() else self.config` in https://github.com/open-compass/opencompass/blob/main/opencompass/utils/run.py#L95 ?

Thanks, would you like to create a PR for this?