Click on tif file - Error could not generate a preview of this file

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Nextcloud version 15.0.2.0:
Operating system and version raspbian GNU/Linux 9 stretch
Apache 2.4.25 (Raspbian)
PHP version 7.2.13-1
|NextCloudPi version |v1.9.1|
|NextCloudPi image|NextCloudPi_01-14-19|
|distribution|Raspbian GNU/Linux 9 \n \l|

Initially no thumpnails and unable to preview these files The files (photos) are tif format under “File” on the Nextcloud dashboard. Clicking on file launches an OS dialog box to download or view using the OS viewer (OS lubuntu) and just the download option on a chromebook. Also there are no preview of the file unlike those for png. I am able to tag these file and download. These photos are mounted external storage(storage type/ scope is system).

Added following the PreviewManager.php as outline on here “NC14 : Problems with preview TIF, AI, RAW images on new installation” by vindic

$this->registerCoreProvider(Preview\TIFF::class, ‘/image/x-dcraw/’);
$this->registerCoreProvider(Preview\TIFF::class, ‘/image/tif/’);

imagick php mod is installed

Rebooted and forced nc-scan and indicated that it was scanning in dialog box

Current behaviour with above changes I am no longer able to view the folder get “circle” symbol on the dashboard.

If I remove the amendments to the PreviewManager.php and reboot and login I am able view the folders under “Files” on the dashboard and able I am able to open the folder where tiff files are located but still no thumpnails and when I click the file
It launches the browser “https://nextcloudpi.local/apps/files/?dir=/FamilyPhotos&fileid=212#/FamilyPhotos/family-photo1.tif” but I get the the following error “Error could not generate a preview of this file Please go to next slide …”

********* Changes to PreviewManager ******************
The output of your Nextcloud log in Admin > Logging:

[PHP] Error: Error: Call to undefined method OC\PreviewManager::registerCoreProvieer() at /var/www/nextcloud/lib/private/PreviewManager.php#363

GET /ocs/v2.php/apps/activity/api/v2/activity/all?format=json&previews=true&since=0
from 192.168.1.211 by ncp at 2019-03-07T16:58:10+00:00

[remote] Error: Error: Call to undefined method OC\PreviewManager::registerCoreProvieer() at <>

  1. /var/www/nextcloud/lib/private/ line 246
    registerCoreProviders()
  2. /var/www/nextcloud/apps/dav/lib/Connector/Sabre/FilesPlugin.php line 354
    isAvailable(OC\Files\Node\Folder {})
  3. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/PropFind.php line 98
    OCA\DAV\Connector\Sabre{closure}("*** sensitive parameters replaced ***")
  4. /var/www/nextcloud/apps/dav/lib/Connector/Sabre/FilesPlugin.php line 355
    handle("{http://nextcloud.org/ns}has-preview", Closure {})
  5. <>
    handleGetProperties(Sabre\DAV\PropFind {}, OCA\DAV\Files\FilesHome {})
  6. /var/www/nextcloud/3rdparty/sabre/event/lib/EventEmitterTrait.php line 105
    call_user_func_array([OCA\DAV\Connect … "], [Sabre\DAV\PropF … }])
  7. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 1059
    emit(“propFind”, [Sabre\DAV\PropF … }])
  8. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 981
    getPropertiesByNode(Sabre\DAV\PropFind {}, OCA\DAV\Files\FilesHome {})
  9. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 1666
    getPropertiesIteratorForPath(“files/ncp”, ["{DAV:}getlastm … "], 1)
  10. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/CorePlugin.php line 355
    generateMultiStatus(Generator {}, false)
  11. <>
    httpPropFind(Sabre\HTTP\Reque … "}, Sabre\HTTP\Response {})
  12. /var/www/nextcloud/3rdparty/sabre/event/lib/EventEmitterTrait.php line 105
    call_user_func_array([Sabre\DAV\CorePlugin {},“httpPropFind”], [Sabre\HTTP\Requ … }])
  13. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 479
    emit(“method:PROPFIND”, [Sabre\HTTP\Requ … }])
  14. /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 254
    invokeMethod(Sabre\HTTP\Reque … "}, Sabre\HTTP\Response {})
  15. /var/www/nextcloud/apps/dav/lib/Server.php line 301
    exec()
  16. /var/www/nextcloud/apps/dav/appinfo/v2/remote.php line 35
    exec()
  17. /var/www/nextcloud/remote.php line 163
    require_once("/var/www/nextcl … p")

PROPFIND /remote.php/dav/files/ncp/
from 192.168.1.211 by ncp at 2019-03-07T16:57:39+00:00

[index] Error: Error: Call to undefined method OC\PreviewManager::registerCoreProvieer() at <>

  1. /var/www/nextcloud/lib/private/PreviewManager.php line 223
    registerCoreProviders()
  2. /var/www/nextcloud/apps/gallery/lib/Service/ConfigService.php line 226
    isMimeSupported(“image/png”)
  3. /var/www/nextcloud/apps/gallery/lib/Service/ConfigService.php line 133
    isMimeSupported(“image/png”)
  4. /var/www/nextcloud/apps/gallery/lib/Controller/Config.php line 53
    getSupportedMediaTypes(true, false)
  5. /var/www/nextcloud/apps/gallery/lib/Controller/ConfigController.php line 64
    getConfig(true)
  6. /var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php line 166
    get(true)
  7. /var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php line 99
    executeController(OCA\Gallery\Cont … {}, “get”)
  8. /var/www/nextcloud/lib/private/AppFramework/App.php line 118
    dispatch(OCA\Gallery\Cont … {}, “get”)
  9. /var/www/nextcloud/lib/private/AppFramework/Routing/RouteActionHandler.php line 47
    main(“ConfigController”, “get”, OC\AppFramework\ … {}, {_route: “gallery.config.get”})
  10. <>
    __invoke({_route: “gallery.config.get”})
  11. /var/www/nextcloud/lib/private/Route/Router.php line 297
    call_user_func(OC\AppFramework\ … {}, {_route: “gallery.config.get”})
  12. /var/www/nextcloud/lib/base.php line 987
    match("/apps/gallery/config")
  13. /var/www/nextcloud/index.php line 42
    handleRequest()

GET /apps/gallery/config?extramediatypes=1
from 192.168.1.211 by ncp at 2019-03-07T16:57:39+00:100:

**************** Remove the changes to PreviewManager.php ***************

Admin ----> logging

[gallery] Error: Exception: Preview generation has failed

GET /apps/gallery/preview/213?width=1400&height=1400&c=ea5b8012183c930615f82bd210a63657&requesttoken=FWEAtd%2BdDx4gvJDUAH8RyBwlwTPAKedVspyH6j%2Fp1rc%3D%3AXzNmwqrudUti68C2LwhWr2sckAb1W7Ysg%2BuwwQiNno4%3D
from 192.168.1.211 by ncp at 2019-03-07T17:24:50+00:100:

[gallery] Error: OCP\Files\NotFoundException: at <>

  1. /var/www/nextcloud/lib/private/Preview/Generator.php line 118
    getMaxPreview(OC\Files\SimpleFS\SimpleFolder {}, OC\Files\Node\File {}, “image/x-dcraw”)
  2. /var/www/nextcloud/lib/private/PreviewManager.php line 206
    getPreview(OC\Files\Node\File {}, 1400, 1400, false, “fill”, “image/x-dcraw”)
  3. /var/www/nextcloud/apps/gallery/lib/Service/PreviewService.php line 106
    getPreview(OC\Files\Node\File {}, 1400, 1400, false)
  4. /var/www/nextcloud/apps/gallery/lib/Controller/Preview.php line 167
    createPreview(OC\Files\Node\File {}, 1400, 1400, true, false)
  5. /var/www/nextcloud/apps/gallery/lib/Controller/Preview.php line 117
    getPreviewData(OC\Files\Node\File {}, true, 1400, 1400, true, false)
  6. /var/www/nextcloud/apps/gallery/lib/Controller/PreviewController.php line 134
    getData(213, 1400, 1400)
  7. /var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php line 166
    getPreview(213, 1400, 1400)
  8. /var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php line 99
    executeController(OCA\Gallery\Cont … {}, “getPreview”)
  9. /var/www/nextcloud/lib/private/AppFramework/App.php line 118
    dispatch(OCA\Gallery\Cont … {}, “getPreview”)
  10. /var/www/nextcloud/lib/private/AppFramework/Routing/RouteActionHandler.php line 47
    main(“PreviewController”, “getPreview”, OC\AppFramework\ … {}, {fileId: “213”,_ … "})
  11. <>
    _invoke({fileId: “213”, … "})
  12. /var/www/nextcloud/lib/private/Route/Router.php line 297
    call_user_func(OC\AppFramework\ … {}, {fileId: “213”,_ … "})
  13. /var/www/nextcloud/lib/base.php line 987
    match("/apps/gallery/preview/213")
  14. /var/www/nextcloud/index.php line 42
    handleRequest()

GET /apps/gallery/preview/213?width=1400&height=1400&c=ea5b8012183c930615f82bd210a63657&requesttoken=FWEAtd%2BdDx4gvJDUAH8RyBwlwTPAKedVspyH6j%2Fp1rc%3D%3AXzNmwqrudUti68C2LwhWr2sckAb1W7Ysg%2BuwwQiNno4%3D
from 192.168.1.211 by ncp at 2019-03-07T17:24:50+00:100:

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

sudo cat /var/www/nextcloud/config/config.php
<?php
$CONFIG = array (
  'passwordsalt' => 'xxx',
  'secret' => 'xxx',
  'trusted_domains' => 
  array (
    0 => 'localhost',
    5 => 'nextcloudpi.local',
    7 => 'nextcloudpi',
    8 => 'nextcloudpi.lan',
    1 => '192.168.1.236',
    20 => 'xxx.ddns.net',
    21 => 'nextcloudpi.local',
  ),
  'datadirectory' => '/media/USBdrive/ncdata',
  'dbtype' => 'mysql',
  'version' => '15.0.2.0',
  'overwrite.cli.url' => 'http://localhost/',
  'dbname' => 'nextcloud',
  'dbhost' => 'localhost',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'mysql.utf8mb4' => true,
  'dbuser' => 'ncadmin',
  'dbpassword' => 'xxx',
  'installed' => true,
  'instanceid' => 'ockhnd03zkvv',
  'memcache.local' => '\\OC\\Memcache\\Redis',
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'redis' => 
  array (
    'host' => '/var/run/redis/redis.sock',
    'port' => 0,
    'timeout' => 0.0,
    'password' => 'xxx',
  ),
  'tempdirectory' => '/media/USBdrive/ncdata/tmp',
  'mail_smtpmode' => 'smtp',
  'mail_smtpauthtype' => 'LOGIN',
  'mail_from_address' => 'xxx',
  'mail_domain' => 'gmail.com',
  'overwriteprotocol' => 'https',
  'maintenance' => false,
  'logfile' => '/media/USBdrive/ncdata/nextcloud.log',
  'loglevel' => '2',
  'log_type' => 'file',
  'mail_sendmailmode' => 'smtp',
  'mail_smtpsecure' => 'ssl',
  'mail_smtphost' => 'smtp.gmail.com',
  'mail_smtpauth' => 1,
  'mail_smtpport' => '465',
  'mail_smtpname' => 'xxx@gmail.com',
  'mail_smtppassword' => 'xxx',
  'htaccess.RewriteBase' => '/',
);

The output of your Apache/nginx/system log in /var/log/____:

no sure which file access.log / nc-access.log  nc-error.log
2

PLEASE CLOSED.

I bulk converted the tiff files to jpg.

Now have preview and able to open image files in browser