fix: web端输入本地目录提示url不合法

[Lubbock]

1. 修复在web端输入目录提示url不合法问题

[coveralls]

Pull Request Test Coverage Report for Build 506

• 0 of 2 (0.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 40.918%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
cobra/api.py	0	2	0.0%

Totals
Change from base Build 503:	0.0%
Covered Lines:	1694
Relevant Lines:	4140

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💛 - Coveralls

[BlBana]

这个输入本地路径的话，可能会造成敏感信息泄露的问题，不建议这么改