if sodler is put as a subfolder of the host eg http://hostname.tld/solder/
when trying to access hostname.tld/solder/api/ you get redirect to hostname.tld/api
RewriteRule ^(.*)/$ /$1 [L,R=301]
rewrites the url incorrectly and is not needed in the .htaccess file as solder/api/ works for interaction with the technic platform.
I have tested this with a now fully function solder installation.
if sodler is put as a subfolder of the host eg http://hostname.tld/solder/ when trying to access hostname.tld/solder/api/ you get redirect to hostname.tld/api
RewriteRule ^(.*)/$ /$1 [L,R=301]
rewrites the url incorrectly and is not needed in the .htaccess file as solder/api/ works for interaction with the technic platform.
I have tested this with a now fully function solder installation.