[Bug]: AttributeError: 'NoneType' object has no attribute 'startswith'

[sunyclj]

Checklist

• The issue exists after disabling all extensions
• The issue exists on a clean installation of webui
• The issue is caused by an extension, but I believe it is caused by a bug in the webui
• The issue exists in the current version of the webui
• The issue has not been reported before recently
• The issue has been reported before but has not been fixed yet

What happened?

run: python webui.py --api --ckpt ../AWPainting_v1.0.safetensors --port 7861
when self.sha256 = hashes.sha256_from_cache(self.filename, f"checkpoint/{name}")
error: AttributeError: 'NoneType' object has no attribute 'startswith'

Steps to reproduce the problem

1、 python webui.py --api --ckpt ../AWPainting_v1.0.safetensors --port 7861

What should have happened?

No error reported

What browsers do you use to access the UI ?

No response

Sysinfo

1、 python webui.py --api --ckpt ../AWPainting_v1.0.safetensors --port 7861

Console logs

Traceback (most recent call last):
  File "/home/jovyan/work/suny/deepfake/stable-diffusion-webui/webui.py", line 152, in <module>
    webui()
  File "/home/jovyan/work/suny/deepfake/stable-diffusion-webui/webui.py", line 49, in webui
    initialize.initialize()
  File "/home/jovyan/work/suny/deepfake/stable-diffusion-webui/modules/initialize.py", line 75, in initialize
    initialize_rest(reload_script_modules=False)
  File "/home/jovyan/work/suny/deepfake/stable-diffusion-webui/modules/initialize.py", line 103, in initialize_rest
    sd_models.list_models()
  File "/home/jovyan/work/suny/deepfake/stable-diffusion-webui/modules/sd_models.py", line 158, in list_models
    checkpoint_info = CheckpointInfo(cmd_ckpt)
  File "/home/jovyan/work/suny/deepfake/stable-diffusion-webui/modules/sd_models.py", line 84, in __init__
    self.sha256 = hashes.sha256_from_cache(self.filename, f"checkpoint/{name}")
  File "/home/jovyan/work/suny/deepfake/stable-diffusion-webui/modules/hashes.py", line 23, in sha256_from_cache
    hashes = cache("hashes-addnet") if use_addnet_hash else cache("hashes")
  File "/home/jovyan/work/suny/deepfake/stable-diffusion-webui/modules/cache.py", line 76, in cache
    cache_obj = make_cache(subsection)
  File "/home/jovyan/work/suny/deepfake/stable-diffusion-webui/modules/cache.py", line 25, in make_cache
    return diskcache.Cache(
  File "/opt/conda/envs/sdwebui_v2/lib/python3.10/site-packages/diskcache/core.py", line 456, in __init__
    sql = self._sql_retry
  File "/opt/conda/envs/sdwebui_v2/lib/python3.10/site-packages/diskcache/core.py", line 652, in _sql_retry
    sql = self._sql
  File "/opt/conda/envs/sdwebui_v2/lib/python3.10/site-packages/diskcache/core.py", line 648, in _sql
    return self._con.execute
  File "/opt/conda/envs/sdwebui_v2/lib/python3.10/site-packages/diskcache/core.py", line 641, in _con
    if key.startswith('sqlite_'):
AttributeError: 'NoneType' object has no attribute 'startswith'

Additional information

No response