Non-Trailing Slash URL Redireted Incorrectly

Hello,

Here is a peculiar issue when I hit the urls without trailing slash, I'm redirected to the urls like this

domain/home/user-name/public_html/the-node-url/

Also, I'm getting hundreds of error messages like this
Notice: Use of undefined constant DEBUG_BACKTRACE_IGNORE_ARGS - assumed 'DEBUG_BACKTRACE_IGNORE_ARGS' in trailing_slash_url_outbound_alter() (line 41 of /home/user-name/public_html/sites/all/modules/trailing_slash/trailing_slash.module).
Hope somebody helps me.

Regards

almamun
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Dinajpur - Rangpur