Ttdfjt

My admin URL redirecting to homepage, I have did lot of efforts to fix admin login link but still it migrating to homepage,

my website link https://www.muzikhausberlin.de/index.php
my admin link https://www.muzikhausberlin.de/admin

after hard hurdle i got it fixed. i replace htaccess file with this code and working perfect

 ############################################
## uncomment the line below to enable developer mode

# SetEnv MAGE_MODE developer

############################################
## uncomment these lines for CGI mode
## make sure to specify the correct cgi php binary file name
## it might be /cgi-bin/php-cgi

# Action php5-cgi /cgi-bin/php5-cgi
# AddHandler php5-cgi .php

############################################
## GoDaddy specific options

# Options -MultiViews

## you might also need to add this line to php.ini
## cgi.fix_pathinfo = 1
## if it still doesn't work, rename php.ini to php5.ini

############################################
## this line is specific for 1and1 hosting

 #AddType x-mapp-php5 .php
 #AddHandler x-mapp-php5 .php

############################################
## default index file

 DirectoryIndex index.php

<IfModule mod_php5.c>

############################################
## adjust memory limit

 php_value memory_limit 768M
 php_value max_execution_time 18000

############################################
## disable automatic session start
## before autoload was initialized

 php_flag session.auto_start off

############################################
## enable resulting html compression

 #php_flag zlib.output_compression on

###########################################
## disable user agent verification to not break multiple image upload

 php_flag suhosin.session.cryptua off

</IfModule>

<IfModule mod_security.c>
###########################################
## disable POST processing to not break multiple image upload

 SecFilterEngine Off
 SecFilterScanPOST Off
</IfModule>

<IfModule mod_deflate.c>

############################################
## enable apache served files compression
## http://developer.yahoo.com/performance/rules.html#gzip

 # Insert filter on all content
 ###SetOutputFilter DEFLATE
 # Insert filter on selected content types only
 #AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css text/javascript

 # Netscape 4.x has some problems...
 #BrowserMatch ^Mozilla/4 gzip-only-text/html

 # Netscape 4.06-4.08 have some more problems
 #BrowserMatch ^Mozilla/4.0[678] no-gzip

 # MSIE masquerades as Netscape, but it is fine
 #BrowserMatch bMSIE !no-gzip !gzip-only-text/html

 # Don't compress images
 #SetEnvIfNoCase Request_URI .(?:gif|jpe?g|png)$ no-gzip dont-vary

 # Make sure proxies don't deliver the wrong content
 #Header append Vary User-Agent env=!dont-vary

</IfModule>

<IfModule mod_ssl.c>

############################################
## make HTTPS env vars available for CGI mode

 SSLOptions StdEnvVars

</IfModule>

<IfModule mod_rewrite.c>

############################################
## enable rewrites

 Options +FollowSymLinks
 RewriteEngine on

############################################
## you can put here your magento root folder
## path relative to web root

 #RewriteBase /magento/

############################################
## workaround for HTTP authorization
## in CGI environment

 RewriteRule .* - [E=HTTP_AUTHORIZATION:%HTTP:Authorization]

############################################
## TRACE and TRACK HTTP methods disabled to prevent XSS attacks

 RewriteCond %REQUEST_METHOD ^TRAC[EK]
 RewriteRule .* - [L,R=405]

############################################
## redirect for mobile user agents

 #RewriteCond %REQUEST_URI !^/mobiledirectoryhere/.*$
 #RewriteCond %HTTP_USER_AGENT "android|blackberry|ipad|iphone|ipod|iemobile|opera mobile|palmos|webos|googlebot-mobile" [NC]
 #RewriteRule ^(.*)$ /mobiledirectoryhere/ [L,R=302]

############################################
## never rewrite for existing files, directories and links

 RewriteCond %REQUEST_FILENAME !-f
 RewriteCond %REQUEST_FILENAME !-d
 RewriteCond %REQUEST_FILENAME !-l

############################################
## rewrite everything else to index.php

 RewriteRule .* index.php [L]

</IfModule>


############################################
## Prevent character encoding issues from server overrides
## If you still have problems, use the second line instead

 AddDefaultCharset Off
 #AddDefaultCharset UTF-8

<IfModule mod_expires.c>

############################################
## Add default Expires header
## http://developer.yahoo.com/performance/rules.html#expires

 ExpiresDefault "access plus 1 year"
 ExpiresByType text/html A0
 ExpiresByType text/plain A0

</IfModule>

###########################################
## Deny access to root files to hide sensitive application information
 RedirectMatch 404 /.git

 <Files composer.json>
 order allow,deny
 deny from all
 </Files>
 <Files composer.lock>
 order allow,deny
 deny from all
 </Files>
 <Files .gitignore>
 order allow,deny
 deny from all
 </Files>
 <Files .htaccess>
 order allow,deny
 deny from all
 </Files>
 <Files .htaccess.sample>
 order allow,deny
 deny from all
 </Files>
 <Files .php_cs>
 order allow,deny
 deny from all
 </Files>
 <Files .travis.yml>
 order allow,deny
 deny from all
 </Files>
 <Files CHANGELOG.md>
 order allow,deny
 deny from all
 </Files>
 <Files CONTRIBUTING.md>
 order allow,deny
 deny from all
 </Files>
 <Files CONTRIBUTOR_LICENSE_AGREEMENT.html>
 order allow,deny
 deny from all
 </Files>
 <Files COPYING.txt>
 order allow,deny
 deny from all
 </Files>
 <Files Gruntfile.js>
 order allow,deny
 deny from all
 </Files>
 <Files LICENSE.txt>
 order allow,deny
 deny from all
 </Files>
 <Files LICENSE_AFL.txt>
 order allow,deny
 deny from all
 </Files>
 <Files nginx.conf.sample>
 order allow,deny
 deny from all
 </Files>
 <Files package.json>
 order allow,deny
 deny from all
 </Files>
 <Files php.ini.sample>
 order allow,deny
 deny from all
 </Files>
 <Files README.md>
 order allow,deny
 deny from all
 </Files>

################################
## If running in cluster environment, uncomment this
## http://developer.yahoo.com/performance/rules.html#etags

 #FileETag none

You can Change in env.php file

'backend' => [
 'frontName' => 'admin'
 ]

Hope it helps.