Code Snippet Give Error when Activate plugin

Hi there i have accidently activate the code which harm the whole website and my site cannot load i have deactivate the code snippets plugin and my site is back i have many other codes there. i have try uninstall the plugin and reinstall it again but when activate the whole site is down i know the code which i use in there causing the problem how i can open it in safe mode and deactivate the code Please Help My customers are complaining Thanks

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