NC:15ResourceLocator can not find a web root

[spacepcde]

I'm using Nextcloud Snap Image.
I have already reinstalled the Nextcloud server several times. I am using Ubuntu 18.
Calendar Version 1.6.5
I have only activated the Nextcloud Calendar and Contacts app.

The problem occurs during dav syncronization with Android. I have already tested several Android apps. The error is always the same.

When I syncronize I get this error message in the log but the syncronization still works.

[lib] Error: ResourceLocator can not find a web root (root: /var/snap/nextcloud/13968/nextcloud/extra-apps/calendar, file: index.php/css/calendar/7a73-a6bf-app.min.css?v=d41d8cd98f00b204e9800998ecf8427e, webRoot: , throw: true)

GET /index.php/apps/calendar/
from My IP Adress by username at 2019-07-08T14:13:21+00:00

[georgehrke]

please use the issue template as described in our contributing guidelines

[spacepcde]

Steps to reproduce

Import a calendar (mine is from Google Calendar)
Use a Caldav App of your choice for Android (I use DAVx5)
Set up the calendar syncronization via Caldav in the app.
Each time it is syncronized, this error will appear in the Nextcloud log.

Expected behaviour

No more errors in the log, easy synconization of Caldav calendars

Actual behaviour

Each time the calendar entries are synchronized via Caldav, the following message appears in the Nextcloud Log:
[lib] Error: ResourceLocator can not find a web root (root: /var/snap/nextcloud/13968/nextcloud/extra-apps/calendar, file: index.php/css/calendar/7a73-a6bf-app.min.css?v=d41d8cd98f00b204e9800998ecf8427e, webRoot: , throw: true)

Server configuration detail

Operating system: Linux 4.15.0-54-generic #58-Ubuntu SMP Mon Jun 24 10:55:24 UTC 2019 x86_64

Webserver: Apache (fpm-fcgi)

Database: mysql 5.7.26

PHP version:

7.2.19
Modules loaded: Core, date, libxml, openssl, pcre, sqlite3, zlib, bz2, ctype, curl, dom, hash, fileinfo, filter, ftp, gd, SPL, iconv, intl, json, ldap, mbstring, pcntl, PDO, session, pdo_sqlite, posix, Reflection, standard, SimpleXML, mysqlnd, exif, tokenizer, xml, xmlreader, xmlwriter, zip, pdo_mysql, cgi-fcgi, redis, Zend OPcache

Nextcloud version: 15.0.8 - 15.0.8.1

Updated from an older Nextcloud/ownCloud or fresh install:

Where did you install Nextcloud from: Snapd

Signing status

Array
(
)

List of activated apps

Enabled:
 - accessibility: 1.1.0
 - activity: 2.8.2
 - calendar: 1.6.5
 - cloud_federation_api: 0.1.0
 - contacts: 3.1.3
 - dav: 1.8.2
 - federatedfilesharing: 1.5.0
 - federation: 1.5.0
 - files: 1.10.0
 - files_pdfviewer: 1.4.0
 - files_sharing: 1.7.0
 - files_texteditor: 2.7.0
 - files_trashbin: 1.5.0
 - files_versions: 1.8.0
 - files_videoplayer: 1.4.0
 - firstrunwizard: 2.4.0
 - gallery: 18.2.0
 - issuetemplate: 0.5.0
 - logreader: 2.0.0
 - lookup_server_connector: 1.3.0
 - mail: 0.11.1
 - nextcloud_announcements: 1.4.0
 - notifications: 2.3.0
 - oauth2: 1.3.0
 - password_policy: 1.5.0
 - provisioning_api: 1.5.0
 - serverinfo: 1.5.0
 - sharebymail: 1.5.0
 - support: 1.0.0
 - survey_client: 1.3.0
 - systemtags: 1.5.0
 - twofactor_backupcodes: 1.4.1
 - twofactor_totp: 2.1.2
 - workflowengine: 1.5.0
Disabled:
 - admin_audit
 - comments
 - encryption
 - files_external
 - passwords
 - theming
 - user_ldap

Configuration (config/config.php)

{
    "apps_paths": [
        {
            "path": "\/snap\/nextcloud\/current\/htdocs\/apps",
            "url": "\/apps",
            "writable": false
        },
        {
            "path": "\/var\/snap\/nextcloud\/current\/nextcloud\/extra-apps",
            "url": "\/extra-apps",
            "writable": true
        }
    ],
    "supportedDatabases": [
        "mysql"
    ],
    "memcache.locking": "\\OC\\Memcache\\Redis",
    "memcache.local": "\\OC\\Memcache\\Redis",
    "redis": {
        "host": "***REMOVED SENSITIVE VALUE***",
        "port": 0
    },
    "instanceid": "***REMOVED SENSITIVE VALUE***",
    "passwordsalt": "***REMOVED SENSITIVE VALUE***",
    "secret": "***REMOVED SENSITIVE VALUE***",
    "trusted_domains": [
        "my_domain",
        "192.168.1.15"
    ],
    "datadirectory": "***REMOVED SENSITIVE VALUE***",
    "dbtype": "mysql",
    "version": "15.0.8.1",
    "overwrite.cli.url": "https:\/\/my_domain",
    "dbname": "***REMOVED SENSITIVE VALUE***",
    "dbhost": "***REMOVED SENSITIVE VALUE***",
    "dbport": "",
    "dbtableprefix": "oc_",
    "mysql.utf8mb4": true,
    "dbuser": "***REMOVED SENSITIVE VALUE***",
    "dbpassword": "***REMOVED SENSITIVE VALUE***",
    "installed": true,
    "maintenance": false,
    "twofactor_enforced": "true",
    "twofactor_enforced_groups": [
        "admin"
    ],
    "twofactor_enforced_excluded_groups": []
}

Are you using external storage, if yes which one: no

Are you using encryption: false

Are you using an external user-backend, if yes which one: /Webdav/Cal/CardDav

Client configuration

Browser: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36

Operating system: Windows 10, MacOSX, Android 9

Logs

Web server error log

The log file is empty

Nextcloud log

{"reqId":"mJHZJXzCrxJmC5k91VU9","level":3,"time":"2019-07-08T14:10:12+00:00","remoteAddr":"80.156.77.218","user":"jonathan","app":"lib","method":"GET","url":"\/index.php\/apps\/contacts\/","message":"ResourceLocator can not find a web r$
{"reqId":"4MWSCDzFguzE4f6woPAn","level":3,"time":"2019-07-08T14:10:20+00:00","remoteAddr":"80.156.77.218","user":"jonathan","app":"lib","method":"GET","url":"\/index.php\/apps\/calendar\/","message":"ResourceLocator can not find a web r$
{"reqId":"9ztU06QRoVRfGn5nUTts","level":3,"time":"2019-07-08T14:12:09+00:00","remoteAddr":"80.156.77.218","user":"jonathan","app":"lib","method":"GET","url":"\/index.php\/apps\/calendar\/","message":"ResourceLocator can not find a web r$
{"reqId":"gqV4ji3fYYWjKEhUeqby","level":3,"time":"2019-07-08T14:13:21+00:00","remoteAddr":"80.156.77.218","user":"jonathan","app":"lib","method":"GET","url":"\/index.php\/apps\/calendar\/","message":"ResourceLocator can not find a web r$
{"reqId":"PwW5qq9Jh65iaDpnH76u","level":2,"time":"2019-07-08T15:26:37+00:00","remoteAddr":"192.168.1.1","user":"jonathan","app":"support","method":"POST","url":"\/index.php\/apps\/support\/generateSystemReport","message":{"Exception":"E$
{"reqId":"lkP8ACNNrs135j8fdcjs","level":2,"time":"2019-07-08T15:26:41+00:00","remoteAddr":"192.168.1.1","user":"jonathan","app":"support","method":"POST","url":"\/index.php\/apps\/support\/generateSystemReport","message":{"Exception":"E$
{"reqId":"7GjZwW6WrRAVNi4L9fF7","level":3,"time":"2019-07-08T15:26:48+00:00","remoteAddr":"192.168.1.1","user":"jonathan","app":"lib","method":"GET","url":"\/index.php\/settings\/admin\/issuetemplate","message":"ResourceLocator can not $
{"reqId":"DDOqUI4jiLAnJpLikBiA","level":3,"time":"2019-07-08T15:36:14+00:00","remoteAddr":"192.168.1.1","user":"jonathan","app":"PHP","method":"POST","url":"\/index.php\/apps\/issuetemplate\/render","message":"Undefined index: client-de$
{"reqId":"DDOqUI4jiLAnJpLikBiA","level":3,"time":"2019-07-08T15:36:14+00:00","remoteAddr":"192.168.1.1","user":"jonathan","app":"PHP","method":"POST","url":"\/index.php\/apps\/issuetemplate\/render","message":"Undefined index: client-de$
{"reqId":"DDOqUI4jiLAnJpLikBiA","level":3,"time":"2019-07-08T15:36:14+00:00","remoteAddr":"192.168.1.1","user":"jonathan","app":"PHP","method":"POST","url":"\/index.php\/apps\/issuetemplate\/render","message":"Undefined index: log-detai$
{"reqId":"DDOqUI4jiLAnJpLikBiA","level":3,"time":"2019-07-08T15:36:14+00:00","remoteAddr":"192.168.1.1","user":"jonathan","app":"PHP","method":"POST","url":"\/index.php\/apps\/issuetemplate\/render","message":"Undefined index: log-detai$
{"reqId":"DDOqUI4jiLAnJpLikBiA","level":3,"time":"2019-07-08T15:36:14+00:00","remoteAddr":"192.168.1.1","user":"jonathan","app":"PHP","method":"POST","url":"\/index.php\/apps\/issuetemplate\/render","message":"Undefined index: log-detai$
{"reqId":"xzQK6CI4GjptQkJY5FuU","level":3,"time":"2019-07-08T15:36:55+00:00","remoteAddr":"192.168.1.1","user":"jonathan","app":"PHP","method":"POST","url":"\/index.php\/apps\/issuetemplate\/render","message":"Undefined index: log-detai$
{"reqId":"xzQK6CI4GjptQkJY5FuU","level":3,"time":"2019-07-08T15:36:55+00:00","remoteAddr":"192.168.1.1","user":"jonathan","app":"PHP","method":"POST","url":"\/index.php\/apps\/issuetemplate\/render","message":"Undefined index: log-detai$
{"reqId":"xzQK6CI4GjptQkJY5FuU","level":3,"time":"2019-07-08T15:36:55+00:00","remoteAddr":"192.168.1.1","user":"jonathan","app":"PHP","method":"POST","url":"\/index.php\/apps\/issuetemplate\/render","message":"Undefined index: log-detai$

Browser log

[the-sane]

It's looking like all of these "can not find a web root" issues are caused by this: nextcloud/server#13556

It's been discussed on the snap github here: nextcloud-snap/nextcloud-snap#902

It appears to be a server bug not something the individual apps can fix, and affects everyone who installed via snap or who is using a nonstandard configuration. Unfortunately, the issue doesn't seem to have gotten anyone's attention since January.

pinging @georgehrke to let you know that this isn't a bug in your app. Also, because you were so awesome about taking care of that disabled apps bug in the server, maybe you know who we need to ping to get some eyeballs on this issue too?

[georgehrke]

Duplicate of nextcloud/server#13556

[georgehrke]

pinging @georgehrke to let you know that this isn't a bug in your app. Also, because you were so awesome about taking care of that disabled apps bug in the server, maybe you know who we need to ping to get some eyeballs on this issue too?

Let me see who to ping.

[ph00lt0]

I faced this issue when uploading a file with the name personal strangely after renaming the file I could import the calendar without any problem. 😕