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## Bug report
### Steps to reproduce
1. Create a shared link of a folder containing images
2. Open the link
3. Switch the view to gallery
4. Open any image
5. Press prev / next or slideshow
### Expected behaviour
<!--
Tell us what should happen
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A different image should appear when I hit the buttons.
### Actual behaviour
<!--
Tell us what happens instead
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Nothing.
It works fine when clicking on the arrows in the gallery view at the nextcloud interface without using a shared link. It is also working when opening the slideshow from the file list view of a shared link.
### Server configuration
**Operating system**: Linux raspi-nextcloud 4.9.28-v7+ #998 SMP Mon May 15 16:55:39 BST 2017 armv7l
**Web server:** Apache/2.4.25 (Raspbian) (apache2handler)
**Database:** mysql 5.6.30
**PHP version:** 7.0.19-1
Modules loaded: Core, date, libxml, openssl, pcre, zlib, filter, hash, Reflection, SPL, session, standard, apache2handler, mysqlnd, PDO, xml, apcu, apc, calendar, ctype, curl, dom, mbstring, fileinfo, ftp, gd, gettext, iconv, imap, json, exif, mcrypt, mysqli, pdo_mysql, Phar, posix, readline, shmop, SimpleXML, sockets, sysvmsg, sysvsem, sysvshm, tokenizer, wddx, xmlreader, xmlrpc, xmlwriter, xsl, zip, Zend OPcache
**Nextcloud version:** 12.0.0 - 12.0.0.29
**Updated from an older Nextcloud/ownCloud or fresh install:**
**Where did you install Nextcloud from:**
**Signing status:**
<details>
<summary>Signing status</summary>
```
[]
```
</details>
**List of activated apps:**
<details>
<summary>App list</summary>
```
Enabled:
- activity: 2.5.2
- admin_notifications: 1.0.0
- audioplayer: 2.0.2
- bookmarks: 0.10.0
- bruteforcesettings: 1.0.2
- calendar: 1.5.3
- circles: 0.11.0
- comments: 1.2.0
- contacts: 1.5.3
- dav: 1.3.0
- deck: 0.2.1
- drawio: 0.8.8
- federatedfilesharing: 1.2.0
- federation: 1.2.0
- files: 1.7.2
- files_downloadactivity: 1.1.1
- files_external: 1.3.0
- files_pdfviewer: 1.1.1
- files_sharing: 1.4.0
- files_texteditor: 2.4.1
- files_trashbin: 1.2.0
- files_versions: 1.5.0
- files_videoplayer: 1.1.0
- firstrunwizard: 2.1
- gallery: 17.0.0
- groupfolders: 1.0.2
- issuetemplate: 0.2.1
- logreader: 2.0.0
- lookup_server_connector: 1.0.0
- mail: 0.6.4
- nextcloud_announcements: 1.1
- notes: 2.3.1
- notifications: 2.0.0
- oauth2: 1.0.5
- passman: 2.1.2
- password_policy: 1.2.2
- provisioning_api: 1.2.0
- quota_warning: 1.0.1
- serverinfo: 1.2.0
- sharebymail: 1.2.0
- survey_client: 1.0.0
- systemtags: 1.2.0
- tasks: 0.9.5
- theming: 1.3.0
- twofactor_backupcodes: 1.1.1
- updatenotification: 1.2.0
- workflowengine: 1.2.0
Disabled:
- admin_audit
- encryption
- registration
- richdocuments
- user_external
- user_ldap
```
</details>
**The content of config/config.php:**
<details>
<summary>Config report</summary>
```
{
"instanceid": "oci1xaaaqe9q",
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"192.168.1.105",
"nextcloudvrs.firewall-gateway.com"
],
"datadirectory": "\/var\/www\/nextcloud\/data",
"overwrite.cli.url": "http:\/\/192.168.1.103",
"dbtype": "mysql",
"version": "12.0.0.29",
"dbname": "nextcloud",
"dbhost": "localhost",
"dbport": "",
"dbtableprefix": "oc_",
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"installed": true,
"mail_smtpmode": "smtp",
"mail_smtpauthtype": "LOGIN",
"mail_from_address":
"mail_domain": "posteo.de",
"mail_smtpsecure": "ssl",
"mail_smtphost": "posteo.de",
"mail_smtpauth": 1,
"mail_smtpport": "465",
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
"memcache.local": "\\OC\\Memcache\\APCu",
"maintenance": false,
"app.mail.imaplog.enabled": true,
"app.mail.smtplog.enabled": true
}
```
</details>
**Are you using external storage, if yes which one:** Array
(
[0] => \OC\Files\Storage\Local
[1] => \OCA\Files_External\Lib\Storage\FTP
[2] => \OC\Files\Storage\DAV
[3] => \OCA\Files_External\Lib\Storage\OwnCloud
[4] => \OCA\Files_External\Lib\Storage\SFTP
[5] => \OCA\Files_External\Lib\Storage\AmazonS3
[6] => \OCA\Files_External\Lib\Storage\Dropbox
[7] => \OCA\Files_External\Lib\Storage\Google
[8] => \OCA\Files_External\Lib\Storage\Swift
[9] => \OCA\Files_External\Lib\Storage\SFTP
)
**Are you using encryption:** no
**Are you using an external user-backend, if yes which one:** LDAP/ActiveDirectory/Webdav/...
### Client configuration
**Browser:** Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.86 Safari/537.36 OPR/46.0.2597.32
**Operating system:**
### Logs
#### Web server error log
<details>
<summary>Web server error log</summary>
```
Insert your webserver log here
```
</details>
#### Nextcloud log (data/nextcloud.log)
<details>
<summary>Nextcloud log</summary>
```
Insert your Nextcloud log here
```
</details>
#### Browser log
<details>
<summary>Browser log</summary>
```
Insert your browser log here, this could for example include:
a) The javascript console log
b) The network log
c) ...
```
</details>