Language trouble

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Hello, could you please tell me where I can edit the code to make script generate normal urls insted of ETH%3B%9F%26Ntilde%3B%80%26ETH%3B%26 when i type a presentation title in russian. Thanks

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problem is solved

Hello, could you please tell me where I can edit the code to make script generate normal urls insted of ETH%3B%9F%26Ntilde%3B%80%26ETH%3B%26 when i type a presentation title in russian. Thanks