Not Redirecting with Global Redirect and DEBUG_BACKTRACE_IGNORE_ARGS Notices

I have setup my site with global redirect module to clean the url and redirect the non-clean url to clean urls.
I not want the Dslash feature.i want each url is end with a trailing slash, so i have install this module.

By doing this now all drupal URL links show trailing slash. but when we visit any no trailing slash not redirect to trailing slash url.
and global redirect module also facing issue not redirect to clean urls.
Trailing slash option is enable in global redirect module.
Global redirect module version : 7.x-1.5
And when Trailing slash option is disable in global redirect module:
This Error Display on every page multiple time :
Notice: Use of undefined constant DEBUG_BACKTRACE_IGNORE_ARGS - assumed 'DEBUG_BACKTRACE_IGNORE_ARGS' in trailing_slash_url_outbound_alter() (line 41 of /srv/www/drupal/sites/all/modules/trailing_slash/trailing_slash.module).