<p>I use opensreetmap to point my local server. I can see my local map in web browser when i type localhost:3000.But When I try to sign up, The error occours:<br>
Parameters: {"utf8"=>"✓", "authenticity_token"=>"+DRjYos1zxLzd5iDC9AZyUX5UqN3lhiUUcLmHmU5FAy2r6TRQoarVoC2ci/Fe4w9p/u9JA4x05BwRlhAJCPatA==", "user"=>{"email"=>"<a href="mailto:yuanyahui11@gmail.com">yuanyahui11@gmail.com</a>", "email_confirmation"=>"<a href="mailto:yuanyahui11@gmail.com">yuanyahui11@gmail.com</a>", "display_name"=>"yeager", "auth_provider"=>"", "pass_crypt"=>"[FILTERED]", "pass_crypt_confirmation"=>"[FILTERED]"}, "commit"=>"Sign Up"}<br>
Can't verify CSRF token authenticity.<br>
How can I sovle this,Hope can get help .Thanks!</p>

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