Unable to delete task

[brennoflaviodaloopa]

Steps to reproduce

I don't know how to exactly reproduce the issue, because it happened only with one task that I have in my list. I'll post more information in the appropriate issue field.

1. Click on "Delete Task"
2. Wait for a few seconds
3. See the error that appears in the UI: "Could not delete the task"

Expected behavior

Task should be deleted

Actual behaviour

Task is not deleted

Tasks app version

0.15.0

CalDAV-clients used

Tasks created using app Tasks.org from F-droid

Browser

Firefox 119

Client operating system

Ubuntu 22.04

Server operating system

FreeBSD 13

Web server

Apache

Database engine version

MariaDB

PHP engine version

PHP 8.2

Nextcloud version

26.0.8

Updated from an older installed version or fresh install

Fresh install

List of activated apps

Enabled:
  - calendar: 4.4.2
  - circles: 26.0.0
  - cloud_federation_api: 1.9.0
  - cms_pico: 1.0.21
  - comments: 1.16.0
  - contacts: 5.3.1
  - contactsinteraction: 1.7.0
  - dashboard: 7.6.0
  - dav: 1.25.0
  - federatedfilesharing: 1.16.0
  - federation: 1.16.0
  - files: 1.21.1
  - files_pdfviewer: 2.7.0
  - files_rightclick: 1.5.0
  - files_sharing: 1.18.0
  - files_trashbin: 1.16.0
  - files_versions: 1.19.1
  - firstrunwizard: 2.15.0
  - gpoddersync: 3.8.1
  - logreader: 2.11.0
  - lookup_server_connector: 1.14.0
  - mail: 3.2.1
  - maps: 1.1.1
  - memories: 5.2.1
  - news: 21.2.0
  - nextcloud_announcements: 1.15.0
  - notes: 4.8.0
  - notifications: 2.14.0
  - oauth2: 1.14.0
  - password_policy: 1.16.0
  - previewgenerator: 5.3.0
  - privacy: 1.10.0
  - provisioning_api: 1.16.0
  - recognize: 4.2.0
  - related_resources: 1.1.0-alpha1
  - richdocuments: 8.0.2
  - serverinfo: 1.16.0
  - settings: 1.8.0
  - sharebymail: 1.16.0
  - support: 1.9.0
  - survey_client: 1.14.0
  - systemtags: 1.16.0
  - tasks: 0.15.0
  - text: 3.7.2
  - theming: 2.1.1
  - twofactor_backupcodes: 1.15.0
  - twofactor_totp: 8.0.0
  - updatenotification: 1.16.0
  - user_status: 1.6.0
  - viewer: 1.10.0
  - weather_status: 1.6.0
  - workflowengine: 2.8.0
Disabled:
  - activity: 2.18.0 (installed 2.18.0)
  - admin_audit: 1.16.0
  - bruteforcesettings: 2.6.0
  - encryption: 2.14.0
  - files_external: 1.18.0
  - photos: 2.2.0 (installed 2.2.0)
  - recommendations: 1.5.0 (installed 1.5.0)
  - spreed: 16.0.4 (installed 16.0.4)
  - suspicious_login: 4.4.0
  - timemanager: 0.3.8 (installed 0.3.8)
  - user_ldap: 1.16.0

Nextcloud configuration

{
    "system": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "192.168.0.6",
            "nextcloud.brennoflavio.com.br"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "26.0.2.1",
        "overwrite.cli.url": "http:\/\/192.168.0.6",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 0
        },
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "overwriteprotocol": "https",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpmode": "smtp",
        "mail_sendmailmode": "smtp",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "465",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "default_phone_region": "BR",
        "htaccess.RewriteBase": "\/",
        "share_folder": "shared_with_me",
        "app_install_overwrite": [
            "cms_pico",
            "maps"
        ],
        "twofactor_enforced": "true",
        "twofactor_enforced_groups": [
            "admin"
        ],
        "twofactor_enforced_excluded_groups": [],
        "filelocking.enabled": true,
        "maintenance": false,
        "memories.vod.path": "\/root\/go-vod\/go-vod",
        "memories.gis_type": 1,
        "preview_max_memory": 4096,
        "preview_max_filesize_image": 256,
        "enabledPreviewProviders": [
            "OC\\Preview\\Image",
            "OC\\Preview\\HEIC",
            "OC\\Preview\\TIFF",
            "OC\\Preview\\Movie"
        ],
        "memories.exiftool_no_local": true,
        "memories.vod.disable": false,
        "memories.vod.ffmpeg": "\/usr\/local\/bin\/ffmpeg",
        "memories.vod.ffprobe": "\/usr\/local\/bin\/ffprobe",
        "memories.vod.external": true,
        "mail_smtpauth": 1,
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpsecure": "ssl"
    }
}

Web server error log

[Wed Nov 01 07:40:44.177525 2023] [proxy_fcgi:error] [pid 32331] (70007)The timeout specified has expired: [client 192.168.0.213:57359] AH01075: Error dispatching request to : (polling)

Log file

No response

Browser log

XHR DELETE
https://nextcloud.brennoflavio.com.br/remote.php/dav/calendars/brenno/rotina-1/2159890767622610259.ics
[HTTP/2 403  868ms]

Error: 
    r dist.js:1
    a dist.js:1
    o dist.js:1
    a dist.js:1
    o dist.js:1
    a dist.js:1
    o dist.js:1
    onreadystatechange dist.js:1
    e dist.js:1
    e dist.js:1
    u dist.js:1
    _invoke dist.js:1
    S dist.js:1
    pe dist.js:1
    i dist.js:1
    exports dist.js:1
    exports dist.js:1
    value dist.js:1
    e dist.js:1
    u dist.js:1
    _invoke dist.js:1
    S dist.js:1
    pe dist.js:1
    i dist.js:1
    exports dist.js:1
    exports dist.js:1
    value dist.js:1
    e dist.js:1
    u dist.js:1
    _invoke dist.js:1
    S dist.js:1
    ke dist.js:1
    i dist.js:1
    exports dist.js:1
    exports dist.js:1
    value dist.js:1
    n tasks.js:829
    u tasks.js:2
    T tasks.js:2
    y tasks.js:2
    fC tasks.js:2
    i tasks.js:2
    promise callback*fC tasks.js:2
    i tasks.js:2
    gC tasks.js:2
    gC tasks.js:2
    deleteTask tasks.js:792
    A vuex.esm.js:851
    dispatch vuex.esm.js:516
    dispatch vuex.esm.js:406
    t tasks.js:867
    t tasks.js:864
    u tasks.js:2
    T tasks.js:2
    y tasks.js:2
    fC tasks.js:2
    i tasks.js:2
    gC tasks.js:2
    gC tasks.js:2
    setInterval handler*scheduleTaskDeletion/n/< tasks.js:863
    u tasks.js:2
    T tasks.js:2
    y tasks.js:2
    fC tasks.js:2
    i tasks.js:2
    gC tasks.js:2
    gC tasks.js:2
    scheduleTaskDeletion tasks.js:849
    A vuex.esm.js:851
    dispatch vuex.esm.js:516
    dispatch vuex.esm.js:406
tasks.js:834:13

Additional info

Browser tries to delete the task by calling DELETE on https://nextcloud.brennoflavio.com.br/remote.php/dav/calendars/brenno/rotina-1/2159890767622610259.ics, and receive the following 403 response:

<?xml version="1.0" encoding="utf-8"?>
<d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns">
  <s:exception>Sabre\DAV\Exception\Forbidden</s:exception>
  <s:message>A calendar object with URI 2159890767622610259-deleted.ics already exists in calendar 10, therefore this object can't be moved into the trashbin</s:message>
</d:error>

I changed the task, and intercepted the PUT request to see the ics file. Here it is:

BEGIN:VCALENDAR
CALSCALE:GREGORIAN
PRODID:-//Ximian//NONSGML Evolution Calendar//EN
VERSION:2.0
BEGIN:VTIMEZONE
TZID:America/Sao_Paulo
X-LIC-LOCATION:America/Sao_Paulo
BEGIN:STANDARD
TZNAME:-03
TZOFFSETFROM:-0200
TZOFFSETTO:-0300
DTSTART:20130217T000000
RRULE:FREQ=YEARLY;UNTIL=20190217T020000Z;BYDAY=SU;BYMONTHDAY=17,18,19,21,22
 ;BYMONTH=2
END:STANDARD
BEGIN:DAYLIGHT
TZNAME:-02
TZOFFSETFROM:-0300
TZOFFSETTO:-0200
DTSTART:20181104T000000
END:DAYLIGHT
BEGIN:STANDARD
TZNAME:-03
TZOFFSETFROM:-0300
TZOFFSETTO:-0300
DTSTART:20380119T001407
END:STANDARD
END:VTIMEZONE
BEGIN:VTODO
DTSTAMP:20231101T073723
UID:2159890767622610259
SEQUENCE:41
CREATED:20230704T130434Z
LAST-MODIFIED:20231101T073723
SUMMARY:Preencher diário a
PRIORITY:9
STATUS:NEEDS-ACTION
RRULE:FREQ=DAILY
X-APPLE-SORT-ORDER:708122972
DUE;TZID=America/Sao_Paulo:20231018T170001
DTSTART;TZID=America/Sao_Paulo:20231017T020000
BEGIN:VALARM
X-EVOLUTION-ALARM-UID:9542a1f9b5af36fdf1e83ac52b5fda00595ee3bd
ACTION:DISPLAY
DESCRIPTION:Default Tasks.org description
TRIGGER;RELATED=END:PT0S
ACKNOWLEDGED:20231031T202356Z
END:VALARM
END:VTODO
END:VCALENDAR

I tried clening up the trash bin, without success. Also I went to the trash bin folder in my serer and could not find anything.

Thanks for the help!

[raimund-schluessler]

Well the error message is quite clear, the weird thing is that it appears although the trahsbin is empty. Can you delete the task from the phone?
At the moment, this sounds like a server issue, because the CalDAV server belongs to server and Tasks is just a client that uses the server. And it is the server the returns the error.

[brennoflavio]

I think there was some inconsistency in my setup. I'll close this as I was able to delete the task after doing some maintenance on my Nextcloud instance.

[pieroavola]

For future reference: If you see an error like A calendar object with URI <filename>.ics already exists in calendar xx, therefore this object can't be moved into the trashbin, the fix is to empty the tasks trashbin.

I've had this happen because Thunderbiry (TbSync) seemingly readded a task that had been deleted a couple days prior.

[tamas646]

I think it's related to nextcloud/server#37577. (for future adventurers)

[Egor3f]

Error is present, so this issue should be reopened
Silently closing bugs without fixing them doesn't make you honor

[brennoflavio]

Error is present, so this issue should be reopened Silently closing bugs without fixing them doesn't make you honor

Feel free to gather evidence and open the issue. I don't have evidence that this is still happening

[Egor3f]

Error is present, so this issue should be reopened Silently closing bugs without fixing them doesn't make you honor

Feel free to gather evidence and open the issue. I don't have evidence that this is still happening

I cannot do it, reopen button was disabled by nextcloud gmbh.

and yes, there is evidence. for example, just today's response from developer tools with the same log message. I don't know how to Proof you that, i'm sure developers should be interested in fixing bugs and not requesting for notarized documented logs or whatever you call evidence

[brennoflavio]

Error is present, so this issue should be reopened Silently closing bugs without fixing them doesn't make you honor

Feel free to gather evidence and open the issue. I don't have evidence that this is still happening

I cannot do it, reopen button was disabled by nextcloud gmbh.

and yes, there is evidence. for example, just today's response from developer tools with the same log message. I don't know how to Proof you that, i'm sure developers should be interested in fixing bugs and not requesting for notarized documented logs or whatever you call evidence

Its easy, just open another issue following their instructions and collect the necessary information that is asked

[DerDreschner]

Will be fixed when nextcloud/server#61881 is being released