wordpress - Thumbnails does not display in media library for a multisite setup -

i using wordpress 4.3.1, , thumbnails not display in media library of subsite, rest images works fine in mainsite. media library works fine in main library. grid layout not work , keeps loading infinitely. searched everywhere , wasted whole day , still not able arrive @ solution :( .htaccess file

# begin wordpress <ifmodule mod_rewrite.c> rewriteengine on rewritebase / rewriterule ^index\.php$ - [l]  # uploaded files rewriterule ^([_0-9a-za-z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [l]  # add trailing slash /wp-admin rewriterule ^([_0-9a-za-z-]+/)?wp-admin$ $1wp-admin/ [r=301,l]  rewritecond %{request_filename} -f [or] rewritecond %{request_filename} -d rewriterule ^ - [l] rewriterule  ^[_0-9a-za-z-]+/(wp-(content|admin|includes).*) $1 [l] rewriterule  ^[_0-9a-za-z-]+/(.*\.php)$ $1 [l] rewriterule . index.php [l] </ifmodule> # end wordpress 

i had reinstall the whole multisite network because main domain had subdmoain in it.

if main domain like:

http://www.example.com 

you need reinstall network main domain as:

http://example.com 

i did , pictures shown again.