tenfy

Update keyrings.alt can fix it. `pip3 install --upgrade keyrings`

Duplicate of #40

I get the same error when I diff two binary file.

show me your setting

@thinkycx @Liuchang0812 Upload the same file, it will update the upload time even if `set_insert_only(1)`. But if upload a different file with a name has existed in cos, it will...

Will this pr be merged?