Multisite/Multinetwork site not working

============Site Structure====================
[1] xyz.org {Main Net work Working Fine}
| |
| |—-[2] xyz.org/diary {Multy site at Main Network working fine}
|
|—–[3] xyz.org/abc {Secoiuncry Network, Working fine}
|
|—[4] xyz.org/abc/diary {Subsite of secondry Network, Not Working fine}

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here site [4] not working and its wp-admin not found error appers can any one tell me whats problem?

my .htaccess is like this

========================================
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]

# add a trailing slash to /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).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]
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So many similar Post i found in this forum but i dont get answer for the same…