How do i redirect / to non trailing version?

[Gauravk]

I have switched on to show non-trailing slash url but still google index is showing / version and not non-trailing version.

How do I permanent redirect https://carnity.com/classifieds/ to https://carnity.com/classifieds

If I do Redirect 301 in htaccess then all internal pages crash as they become this

https://carnity.com/classifiedsitem/744-patrol-2014-big-machine-platinum

instead of 

https://carnity.com/classifieds/item/744-patrol-2014-big-machine-platinum

 

[newbie LAC]

RewriteRule ^classifieds/$ /classifieds [R=301,L]

 

[Gauravk]

Thanks I have added this line in htaccess but still https://carnity.com/classifieds/ is not redirecting in browser to non-trailing version

https://carnity.com/classifieds/

access this

[newbie LAC]

Add after

RewriteEngine On

Ex

RewriteEngine On
RewriteRule ^classifieds/$ /classifieds [R=301,L]

[Gauravk]

It's crashing the site now with these codes

 

[newbie LAC]

I guess you copied the code with invisible chars

Attach you htaccess file

[Gauravk]

I manually type all and site is working but still, https://carnity.com/classifieds/ is not getting redirected to https://carnity.com/classifieds