I am unable to install the SEF component

Error message attached.

I tried to remove existing component and reinstall and now I am unable to install

This site is a site that has been reproduced from an existing site which already had ARTIO SEF component but have bought new version with new domain name.

Running Joomla 3.8.2

I took a look in the database and saw that the table existed but has _BAK on end of name. If remove the _BAK then I loose the missing error but get another error in 2nd image attached

ok managed to fix this by going into extensions > manage > manage and search for SEF. There was an existing plugin for SEF URL registered to ARTIO which I uninstalled. Then when I reinstalled the component the plugin was readded and the sefurls tabel was added to my database successfully.