Installation impossible nextcloud 19

Bonjour,
J’ai voulu installer la version 19 de nextcloud sur mon Nas Synology :
-decompression de l’archive dans le repertoire /web
modifier les droits du repertoire (http:http)
me connecter au serveur : nas/nextcloud
remplir la page de configuration et lancer “finalisation”
et là, j’ai une erreur 504 à répétition … impossible de me connecter.
Dans phpmyadmin, la bd est bien creé dans mariadb 5.0 avec des tables, le nas est sous apache 2.4 et php 7.3, avec les modules php activés comme indiqués dans les tutos, le virtual host est créé dans le nas pour nextcloud …
Je ne voit pas se qui bloque, j’essaie depuis 2 jours.
ps: j’ai une instance Owncloud qui tourne sur le meme nas, avec les memes parametres, sans probleme, mon intention étant de switcher de owncloud a nextcloud et pas de garder les 2, evidemment.
Je vous remercie par avance de l’aide que vous pourriez m’apporter. :slight_smile:

Please post more details.

  • Logs
  • installation guide you used
  • configuration you set
  • error screenshots
  • apache2- and nextcloud-configurations (your modifications)

j’ai suivi ce guide : https://mariushosting.com/how-to-install-nextcloud-on-your-synology-nas/
Le log de nextcloud :

{"reqId":"hRlWXib5xNwOq94RGs4U","level":2,"time":"2020-07-15T10:13:40+00:00","remoteAddr":"192.168.15.130","user":"--","app":"no app in context","method":"GET","url":"/nextcloud/","message":"Could not detect any host in http:///nextcloud/data/htaccesstest.txt","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0","version":""}
{"reqId":"hRlWXib5xNwOq94RGs4U","level":3,"time":"2020-07-15T10:13:40+00:00","remoteAddr":"192.168.15.130","user":"--","app":"jsresourceloader","method":"GET","url":"/nextcloud/","message":"Could not find resource js/setup.js to load","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0","version":""}
{"reqId":"hRlWXib5xNwOq94RGs4U","level":3,"time":"2020-07-15T10:13:40+00:00","remoteAddr":"192.168.15.130","user":"--","app":"PHP","method":"GET","url":"/nextcloud/","message":"chmod(): No such file or directory at /volume1/web/nextcloud/lib/private/Log/File.php#86","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0","version":""}
{"reqId":"THeIvGEwXGeoFUYuhk8P","level":3,"time":"2020-07-15T10:14:23+00:00","remoteAddr":"192.168.15.130","user":"--","app":"PHP","method":"POST","url":"/nextcloud/index.php","message":"session_start(): A session had already been started - ignoring at /volume1/web/nextcloud/lib/private/Session/Internal.php#209","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0","version":""}
{"reqId":"3XgH89sTyToK9gKCFK2B","level":3,"time":"2020-07-15T10:15:27+00:00","remoteAddr":"192.168.15.130","user":"--","app":"PHP","method":"POST","url":"/nextcloud/index.php","message":"session_start(): A session had already been started - ignoring at /volume1/web/nextcloud/lib/private/Session/Internal.php#209","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0","version":"19.0.0.12"}
{"reqId":"3XgH89sTyToK9gKCFK2B","level":3,"time":"2020-07-15T10:16:29+00:00","remoteAddr":"192.168.15.130","user":"--","app":"jsresourceloader","method":"POST","url":"/nextcloud/index.php","message":"Could not find resource js/setup.js to load","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0","version":"19.0.0.12"}
    {"reqId":"Netn5CcdSbGlkEdgslgb","level":3,"time":"2020-07-15T10:45:30+00:00","remoteAddr":"192.168.15.130","user":"--","app":"PHP","method":"POST","url":"/nextcloud/index.php","message":"session_start(): A session had already been started - ignoring at /volume1/web/nextcloud/lib/private/Session/Internal.php#209","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0","version":"19.0.0.12"}

L’erreur est une page 504 : une erreur s’et produite lors du traitement de cette demande

Je n’ai fait aucune modif dans apache et je n’ai pas fait de modif dans nextcloud, c’est une installation neuve

Merci !!!

Please read first similar problem because of “http:///nextcloud/data/htaccesstest.txt”.
After that ask again.

Internal server error after installation, anybody knows what's wrong with this?