Upgrade to Laravel 5.8 and AdminLTE3

public/.htaccess

@@ -1,20 +1,21 @@
 <IfModule mod_rewrite.c>
     <IfModule mod_negotiation.c>
-        Options -MultiViews
+        Options -MultiViews -Indexes
     </IfModule>
 
     RewriteEngine On
 
+    # Handle Authorization Header
+    RewriteCond %{HTTP:Authorization} .
+    RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
+
     # Redirect Trailing Slashes If Not A Folder...
     RewriteCond %{REQUEST_FILENAME} !-d
-    RewriteRule ^(.*)/$ /$1 [L,R=301]
+    RewriteCond %{REQUEST_URI} (.+)/$
+    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>