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Thank you for your reply. I fixed this problems.I changed route folder name so solved 404 error.but I don`t know this method is not correct in rule. Thank you. 
Hello,How to fix 404 error?This is my project structure and code.I don`t know how to solve this problems.I am working in development store  When click button, got 404 error  Please give me adviceThank you
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