[Q] Multiple web-services on single webserver

Hello!

I want to offer 3 different web-services (Adminer, phpldapadmin, FusionDirectory) on the same webserver.
Any web-service has its own vhost-file.
Any web-service has its own error- and access-file.
All web-services use the same php-socket.

I want to access the different web-services using the same address:
https://<servername>/<webservice>

I can access web-service https://furi/adminer w/o issue, but any other webserver fails with 404. This error is written to Adminer error log, although I'm trying to access phpldapadmin:
2016/03/25 19:33:05 [error] 7415#7415: *8 directory index of "/usr/share/nginx/html/phpldapadmin/" is forbidden, client: 10.0.0.1, server: _, request: "GET /phpldapadmin/ HTTP/1.0", host: "fudir"

Question:
Is it possible setup a webserver as indicated above?

When I define different ports for the different web-services, there are no issues.

THX