wildcard ssl .htaccess file causes 500 error on laravel subdomain - wordpress

Question

I have a wildcard ssl installed on my account (My host is Bluehost) and I followed the directions here from Bluehost's site to install the wildcard SSL. However, when I try and access the site at all it comes up with a 500 internal server error. I am using laravel framework right now for the subdomain, I don't know if that changes anything, but here is the .htaccess file for the main site (Which is a wordpress site):
# Custom subdomain .htaccess SSL + WordPress
RewriteCond %{HTTP_HOST} ^admin.mysite.com$
RewriteCond %{REQUEST_URI} !^/admin/public/
RewriteRule ^(.*)$ /admin/public/$1
RewriteCond %{HTTP_HOST} ^admin.mysite.com$
RewriteRule ^(/)?$ admin/public/index.php [L]
# End custom subdomain .htaccess
# BEGIN WordPress
AddHandler application/x-httpd-php70s .php
<IfModule mod_rewrite.c>
# Custom maindomain .htaccess WordPress
RewriteBase /
RewriteCond %{HTTP_HOST} ^(www.)?mysite.com$
RewriteRule ^index\.php$ - [L]
RewriteCond %{HTTP_HOST} ^(www.)?mysite.com$
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
# End custom maindomain .htaccess
</IfModule>
# END WordPress
And here is the .htaccess file for the subdomain (the one with laravel installed):
<IfModule mod_rewrite.c>
<IfModule mod_negotiation.c>
Options -MultiViews
</IfModule>
RewriteEngine On
# Redirect Trailing Slashes If Not A Folder...
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)/$ /$1 [L,R=301]
# Handle Front Controller...
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ index.php [L]
# Handle Authorization Header
RewriteCond %{HTTP:Authorization} .
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
</IfModule>
Keep in mind too, I know nothing about .htaccess or how it works, I just did what the webpage said to do.

Answer 1

I suggest you to try below code for simple redirection HTTP to HTTPS:
RewriteCond %{HTTPS} off
RewriteRule ^(.*) https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
This should work for your main domain and its sub-domain both. Now if you want to redirect Non-WWW domain to WWW then try below code;
RewriteCond %{HTTPS} off [OR]
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule (.*) https://www.domainname.com%{REQUEST_URI} [L,R=301]