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Sorry to hear you’re facing problems 
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In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
example
Or for longer, use three backticks above and below the code snippet:
longer
example
here
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can 
Nextcloud version (eg, 20.0.5): 25.0.3
Operating system and version (eg, Ubuntu 20.04): Archlinux - Kernel: 5.17.9-arch1-1
Apache or nginx version (eg, Apache 2.4.25): nginx/1.20.2
PHP version (eg, 7.4): PHP 8.1.6 (cli) (built: May 15 2022 06:10:08) (NTS)
The issue you are facing:
Share work well on V24.0.6, since upgrade to V25.0.1 (and next minor)
For any share, i get error to see/access files
With examples and screenshots :
Here, share between to users of my instance
(same issue if add/del some right(s) )
Log on nginx :
ip.of.request - - [05/Jan/2023:10:10:49 +0100] “GET /ocs/v2.php/apps/notifications/api/v2/notifications HTTP/2.0” 304 0 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:10:53 +0100] “GET /apps/files/?dir=/Share/InstantUpload/Pictures&fileid=498216 HTTP/2.0” 200 15752 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:10:53 +0100] “GET /apps/integration_whiteboard/css/style.css?v=1b123539-1 HTTP/2.0” 404 20 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:10:54 +0100] “GET /ocs/v2.php/search/providers?from=%2Fapps%2Ffiles%2F%3Fdir%3D%2FShare%2FInstantUpload%2FPictures%26fileid%3D498216 HTTP/2.0” 200 334 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:10:56 +0100] “GET /ocs/v2.php/apps/notifications/api/v2/notifications HTTP/2.0” 200 1183 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:10:56 +0100] “GET /apps/files_sharing/api/externalShares HTTP/2.0” 200 22 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:10:56 +0100] “PROPFIND /remote.php/dav/files/username/Share/InstantUpload/Pictures HTTP/2.0” 207 813 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:10:56 +0100] “GET /ocs/v2.php/apps/text/workspace?path=%2FShare%2FInstantUpload%2FPictures HTTP/2.0” 404 142 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:10:56 +0100] “GET /apps/recommendations/api/recommendations HTTP/2.0” 200 342 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:10:56 +0100] “GET /apps/files/ajax/getstoragestats?dir=%2FShare%2FInstantUpload%2FPictures HTTP/2.0” 200 234 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:10:56 +0100] “GET /core/preview?fileId=498228&c=35b8eb32d2cc72ef3353e0aad5a1f334&x=250&y=250&forceIcon=0&a=0 HTTP/2.0” 404 2 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:11:01 +0100] “GET /ocs/v2.php/apps/notifications/api/v2/notifications HTTP/2.0” 304 0 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
After, on detail via app metadata, i get exif informations about picture… i can’t see it and i can get metadata…
no log on nextcloud.log except if remove all right (view-only mode) and get this error :
==> /path/data/nextcloud.log <==
{“reqId”:“W9aGdUg5KeSfW6h8SLwr”,“level”:3,“time”:“2023-01-05T09:05:04+00:00”,“remoteAddr”:“ip”,“user”:“username”,“app”:“webdav”,“method”:“GET”,“url”:“/remote.php/dav/files/username/Share/InstantUpload/Pictures/1665417891919.jpg”,“message”:“Access to this resource has been denied because it is in view-only mode.”,“userAgent”:“Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”,“version”:“25.0.2.3”,“exception”:{“Exception”:“OCA\DAV\Connector\Sabre\Exception\Forbidden”,“Message”:“Access to this resource has been denied because it is in view-only mode.”,“Code”:0,“Trace”:[{“file”:“/path/3rdparty/sabre/event/lib/WildcardEmitterTrait.php”,“line”:89,“function”:“checkViewOnly”,“class”:“OCA\DAV\DAV\ViewOnlyPlugin”,“type”:“->”},{“file”:“/path/3rdparty/sabre/dav/lib/DAV/Server.php”,“line”:472,“function”:“emit”,“class”:“Sabre\DAV\Server”,“type”:“->”},{“file”:“/path/3rdparty/sabre/dav/lib/DAV/Server.php”,“line”:253,“function”:“invokeMethod”,“class”:“Sabre\DAV\Server”,“type”:“->”},{“file”:“/path/3rdparty/sabre/dav/lib/DAV/Server.php”,“line”:321,“function”:“start”,“class”:“Sabre\DAV\Server”,“type”:“->”},{“file”:“/path/apps/dav/lib/Server.php”,“line”:360,“function”:“exec”,“class”:“Sabre\DAV\Server”,“type”:“->”},{“file”:“/path/apps/dav/appinfo/v2/remote.php”,“line”:35,“function”:“exec”,“class”:“OCA\DAV\Server”,“type”:“->”},{“file”:“/path/remote.php”,“line”:171,“args”:[“/path/apps/dav/appinfo/v2/remote.php”],“function”:“require_once”}],“File”:“/path/apps/dav/lib/DAV/ViewOnlyPlugin.php”,“Line”:96,“message”:“Access to this resource has been denied because it is in view-only mode.”,“exception”:{},“CustomMessage”:“Access to this resource has been denied because it is in view-only mode.”}}
If create share link(folder or file) :
Same case
Log on nginx (no log on nextcloud.log) :
ip.of.request - - [05/Jan/2023:10:18:42 +0100] “GET /s/zk6zdeKMkJrNLJJ HTTP/2.0” 200 10138 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:18:42 +0100] “GET /apps/integration_whiteboard/css/style.css?v=1b123539-1 HTTP/2.0” 404 20 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - zk6zdeKMkJrNLJJ [05/Jan/2023:10:18:43 +0100] “PROPFIND /public.php/webdav/ HTTP/2.0” 207 967 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:18:43 +0100] “GET /apps/files_sharing/publicpreview/zk6zdeKMkJrNLJJ?file=/&fileId=498228&x=1874&y=1007&a=true HTTP/2.0” 404 2 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0)
Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:18:43 +0100] “GET /s/zk6zdeKMkJrNLJJ/download?path=&files= HTTP/2.0” 200 1399827 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
ip.of.request - - [05/Jan/2023:10:19:03 +0100] “GET /ocs/v2.php/apps/notifications/api/v2/notifications HTTP/2.0” 200 470 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0”
not only for picture : break video/music/etc
same issue on nextcloud app (tested on android only)
if share picture on talk room : same issue, picture can’t be see
Is this the first time you’ve seen this error? (Y/N): N
Steps to replicate it:
- create share : internal or link
- for user, test to open file or open link
- see error to load it
The output of your Nextcloud log in Admin > Logging:
See top
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'instanceid' => 'SENSITIVE',
'passwordsalt' => 'SENSITIVE',
'secret' => 'SENSITIVE',
'trusted_domains' =>
array (
0 => 'SENSITIVE',
1 => 'www.SENSITIVE',
),
'datadirectory' => '/path/SENSITIVE',
'dbtype' => 'mysql',
'version' => '25.0.3.2',
'overwrite.cli.url' => 'https://SENSITIVE',
'overwriteprotocol' => 'https',
'dbname' => 'SENSITIVE',
'dbhost' => 'SENSITIVE',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => 'SENSITIVE',
'dbpassword' => 'SENSITIVE',
'installed' => true,
'default_locale' => 'SENSITIVE',
'default_phone_region' => 'SENSITIVE',
'app_install_overwrite' =>
array (
0 => 'caniupdate',
1 => 'ocsms',
2 => 'socialsharing_email',
3 => 'drawio',
4 => 'integration_whiteboard',
),
'memcache.local' => '\\OC\\Memcache\\APCu',
'memcache.distributed' => '\\OC\\Memcache\\Redis',
'mail_smtpmode' => 'smtp',
'mail_smtpsecure' => 'ssl',
'mail_sendmailmode' => 'smtp',
'mail_domain' => 'SENSITIVE',
'mail_smtpauthtype' => 'LOGIN',
'mail_smtpauth' => 1,
'mail_smtphost' => 'SENSITIVE',
'mail_smtpport' => 'SENSITIVE',
'mail_smtpname' => 'SENSITIVE',
'mail_smtppassword' => 'SENSITIVE',
'mail_from_address' => 'SENSITIVE',
'maintenance' => false,
'theme' => '',
'loglevel' => 2,
'trashbin_retention_obligation' => 'auto',
);
The output of your Apache/nginx/system log in /var/log/____:
see top
PASTE HERE
Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary.
see top
)