http - svn with redmine error.log apache Permission denied -

i try access redmine svn repository. when write http url in browser access svn since redmine have error.

can't check path '/var/svn/projet/db/locks/666/6666cd76f96956469e7be39d750cc7d9': permission denied [500, #13]

the locks folder not exist.i work docker redmine run in container , svn in other container.

update 28 jul 2017

configuration nginx:

server {      listen 80 default_server;     listen [::]:80 default_server;      server_name  svn.domaine.com;     location / {             proxy_pass http://172.18.0.1:1200;     }      error_page   500 502 503 504  /50x.html;     location = /50x.html {             root   /var/www/nginx-default;     } } 

when access

http:// svn.domaine.com/projet

i revisions. on redmine on same machine

http:// 172.18.0.1:1200/projet

i 404 , apache return error:

can't check path '/var/svn/projet/db/locks/666/6666cd76f96956469e7be39d750cc7d9': permission denied [500, #13]