Uploading a image sometimes fails with exception

[SystemKeeper]

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Steps to reproduce

1. Upload an image in talk-web

Expected behaviour

See the image preview after the message was loaded from the server

Actual behaviour

Most of the time the temporary message (which shows the preview) is replaced by a placeholder. An internal server error can be observed. Not seeing this when doing an upload from a mobile client.

Bildschirmaufnahme.2023-06-02.um.10.31.02.mov

Talk app

Talk app version: Talk 17 RC2

Browser

Operating system: MacOS 13.2

Browser name: Chrome

Browser version: 112

Exception

{
    "reqId": "LYanVxDqemp9114LexKr",
    "level": 3,
    "time": "2023-06-02T07:41:48+00:00",
    "remoteAddr": "...",
    "user": "...",
    "app": "index",
    "method": "GET",
    "url": "/core/preview?fileId=7538715&x=-1&y=768&a=1",
    "message": "Could not create folder \"/appdata_.../preview/7/0/b/f/f/2/4/7538715\"",
    "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36",
    "version": "27.0.0.6",
    "exception": {
        "Exception": "OCP\\Files\\NotPermittedException",
        "Message": "Could not create folder \"/appdata_.../preview/7/0/b/f/f/2/4/7538715\"",
        "Code": 0,
        "Trace": [
            {
                "file": "/var/www/.../nextcloud/lib/private/Files/AppData/AppData.php",
                "line": 147,
                "function": "newFolder",
                "class": "OC\\Files\\Node\\Folder",
                "type": "->",
                "args": [
                    "7/0/b/f/f/2/4/7538715"
                ]
            },
            {
                "file": "/var/www/.../nextcloud/lib/private/Preview/Storage/Root.php",
                "line": 74,
                "function": "newFolder",
                "class": "OC\\Files\\AppData\\AppData",
                "type": "->",
                "args": [
                    "7/0/b/f/f/2/4/7538715"
                ]
            },
            {
                "file": "/var/www/.../nextcloud/lib/private/Preview/Generator.php",
                "line": 643,
                "function": "newFolder",
                "class": "OC\\Preview\\Storage\\Root",
                "type": "->",
                "args": [
                    "7538715"
                ]
            },
            {
                "file": "/var/www/.../nextcloud/lib/private/Preview/Generator.php",
                "line": 139,
                "function": "getPreviewFolder",
                "class": "OC\\Preview\\Generator",
                "type": "->",
                "args": [
                    [
                        "OC\\Files\\Node\\File"
                    ]
                ]
            },
            {
                "file": "/var/www/.../nextcloud/lib/private/Preview/Generator.php",
                "line": 116,
                "function": "generatePreviews",
                "class": "OC\\Preview\\Generator",
                "type": "->",
                "args": [
                    [
                        "OC\\Files\\Node\\File"
                    ],
                    [
                        [
                            -1,
                            768,
                            false,
                            "fill"
                        ]
                    ],
                    "image/jpeg"
                ]
            },
            {
                "file": "/var/www/.../nextcloud/lib/private/PreviewManager.php",
                "line": 192,
                "function": "getPreview",
                "class": "OC\\Preview\\Generator",
                "type": "->",
                "args": [
                    [
                        "OC\\Files\\Node\\File"
                    ],
                    -1,
                    768,
                    false,
                    "fill",
                    null
                ]
            },
            {
                "file": "/var/www/.../nextcloud/core/Controller/PreviewController.php",
                "line": 144,
                "function": "getPreview",
                "class": "OC\\PreviewManager",
                "type": "->",
                "args": [
                    [
                        "OC\\Files\\Node\\File"
                    ],
                    -1,
                    768,
                    false,
                    "fill"
                ]
            },
            {
                "file": "/var/www/.../nextcloud/core/Controller/PreviewController.php",
                "line": 113,
                "function": "fetchPreview",
                "class": "OC\\Core\\Controller\\PreviewController",
                "type": "->",
                "args": [
                    [
                        "OC\\Files\\Node\\File"
                    ],
                    -1,
                    768,
                    true,
                    true,
                    "fill"
                ]
            },
            {
                "file": "/var/www/.../nextcloud/lib/private/AppFramework/Http/Dispatcher.php",
                "line": 230,
                "function": "getPreviewByFileId",
                "class": "OC\\Core\\Controller\\PreviewController",
                "type": "->",
                "args": [
                    7538715,
                    -1,
                    768,
                    true,
                    true,
                    "fill"
                ]
            },
            {
                "file": "/var/www/.../nextcloud/lib/private/AppFramework/Http/Dispatcher.php",
                "line": 137,
                "function": "executeController",
                "class": "OC\\AppFramework\\Http\\Dispatcher",
                "type": "->",
                "args": [
                    [
                        "OC\\Core\\Controller\\PreviewController"
                    ],
                    "getPreviewByFileId"
                ]
            },
            {
                "file": "/var/www/.../nextcloud/lib/private/AppFramework/App.php",
                "line": 183,
                "function": "dispatch",
                "class": "OC\\AppFramework\\Http\\Dispatcher",
                "type": "->",
                "args": [
                    [
                        "OC\\Core\\Controller\\PreviewController"
                    ],
                    "getPreviewByFileId"
                ]
            },
            {
                "file": "/var/www/.../nextcloud/lib/private/Route/Router.php",
                "line": 315,
                "function": "main",
                "class": "OC\\AppFramework\\App",
                "type": "::",
                "args": [
                    "OC\\Core\\Controller\\PreviewController",
                    "getPreviewByFileId",
                    [
                        "OC\\AppFramework\\DependencyInjection\\DIContainer"
                    ],
                    [
                        "core.Preview.getPreviewByFileId"
                    ]
                ]
            },
            {
                "file": "/var/www/.../nextcloud/lib/base.php",
                "line": 1064,
                "function": "match",
                "class": "OC\\Route\\Router",
                "type": "->",
                "args": [
                    "/core/preview"
                ]
            },
            {
                "file": "/var/www/.../nextcloud/index.php",
                "line": 36,
                "function": "handleRequest",
                "class": "OC",
                "type": "::",
                "args": []
            }
        ],
        "File": "/var/www/.../nextcloud/lib/private/Files/Node/Folder.php",
        "Line": 166,
        "CustomMessage": "--"
    }
}

[Antreesy]

Possibly related with server/core issue:

• [Bug]: Preview for some photos not generated server#36463

[nickvergessen]

Still happening?

[SystemKeeper]

Haven't seen this in a while, might have been a side-effect of imaginary issues in this case.