Route to Module invalid value on Seo and URL

[Mr. Trice]

I'm using prestashop 1.6.1.18, my prestashop was installed on the root directory of my server, so i decided to have a sub-folder for it in order to look nice. i moved the files to the sub-folder and created a .htaccess code to redirect it to the sub-folder which when successfully but was not displaying as normal. i was told that i will need to regenerate the .htaccess file of the friendly url, but when i tried doing that i always have this error. 

 

2 errors

1. The route is not valid

2. Route to modules : Incorrect value

 

Please i need help.