Can’t install plugins with W3 Total Cache

Hi Marko, thanks for the answer.

Q: you are having issues adding new plugins while W3 Total Cache is activated?
Answer: Yes, exactly

Q: WHich instructions have you been following to fix the mistakes?
Answer: On WordPress, these instructions are appearing

W3 Total Cache Error: Files and directories could not be automatically created to complete the installation.

Please execute commands manually
or use FTP form to allow W3 Total Cache make it automatically.
Edit file /home/customer/www/visitmind.info/public_html/.htaccess and replace all lines between and including # BEGIN W3TC Page Cache core and # END W3TC Page Cache core markers with:
# BEGIN W3TC Page Cache core
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{HTTPS} =on
RewriteRule .* – [E=W3TC_SSL:_ssl]
RewriteCond %{SERVER_PORT} =443
RewriteRule .* – [E=W3TC_SSL:_ssl]
RewriteCond %{HTTP:X-Forwarded-Proto} =https [NC]
RewriteRule .* – [E=W3TC_SSL:_ssl]
RewriteCond %{HTTP:Accept-Encoding} gzip
RewriteRule .* – [E=W3TC_ENC:_gzip]
RewriteCond %{HTTP_COOKIE} w3tc_preview [NC]
RewriteRule .* – [E=W3TC_PREVIEW:_preview]
RewriteCond %{REQUEST_METHOD} !=POST
RewriteCond %{QUERY_STRING} =””
RewriteCond %{HTTP_COOKIE} !(comment_author|wp\-postpass|w3tc_logged_out|wordpress_logged_in|wptouch_switch_toggle) [NC]
RewriteCond %{REQUEST_URI} \/$
RewriteCond “%{DOCUMENT_ROOT}/wp-content/cache/page_enhanced/%{HTTP_HOST}/%{REQUEST_URI}/_index%{ENV:W3TC_SSL}%{ENV:W3TC_PREVIEW}.html%{ENV:W3TC_ENC}” -f
RewriteRule .* “/wp-content/cache/page_enhanced/%{HTTP_HOST}/%{REQUEST_URI}/_index%{ENV:W3TC_SSL}%{ENV:W3TC_PREVIEW}.html%{ENV:W3TC_ENC}” [L]
</IfModule>
# END W3TC Page Cache core

Q: which updates in .htaccess you have made?
Answer: I have my website hosted in siteground, so I was directly to my profile, site tools–website–files manager–public_html folder–.htacess–right click in edit–I added that line of code that you saw above–I gave click in saved that it said that it cannot be saved because some problems.

Q: Are the changes in .htaccess are not being saved or you are getting some error?
Answer: Yes exactly, they are being saved and an error in appearing.