TypeError after upgrading to beta 8 from beta 7

holyfuzz

Hi, I'm trying to upgrade my forum from Beta 7 to Beta 8, but after doing the upgrade, I'm getting an error when trying to view my forum's homepage:

TypeError
Argument 1 passed to Flarum\Formatter\Event\Rendering::__construct() must be an instance of s9e\TextFormatter\Renderer, instance of __PHP_Incomplete_Class given, called in /var/www/testforum/vendor/flarum/core/src/Formatter/Formatter.php on line 78

My upgrade process was as follows:

I disabled all 3rd-party extensions. (Specifically, all the ones with versions in formats other than v0.1.0-beta.X.)
I verified that I am running the required software:
- php --version prints PHP 7.2.13-1+ubuntu16.04.1+deb.sury.org+1 (cli) (built: Dec 7 2018 08:07:08) ( NTS )
- mysql --version prints mysql Ver 14.14 Distrib 5.7.24, for Linux (x86_64) using EditLine wrapper
I installed a fresh copy of flarum into an empty directory by running composer create-project flarum/flarum . --stability=beta
I copied my old config.php into the new folder.
I copied my old assets folder into the new public folder.
I ran sudo chown -R myser:www-data . to make all of flarum's folder writable by apache.
I ran composer update which seemed to do nothing.
I ran php flarum migrate which took a few minutes and had no errors.
I ran php flarum cache:clear.
I set my webroot to point at the new public folder.
I attempted to open the forum in my browser, resulting in the above error.

Please let me know what additional information I can provide to help debug this. Here's the full stack trace:

52
TypeError 
…/vendor/flarum/core/src/Formatter/Event/Rendering.php38
51
Flarum\Formatter\Event\Rendering __construct
…/vendor/flarum/core/src/Formatter/Formatter.php78
50
Flarum\Formatter\Formatter render
…/vendor/flarum/core/src/Post/CommentPost.php173
49
Flarum\Post\CommentPost getContentHtmlAttribute
…/vendor/illuminate/database/Eloquent/Concerns/HasAttributes.php438
48
Illuminate\Database\Eloquent\Model mutateAttribute
…/vendor/illuminate/database/Eloquent/Concerns/HasAttributes.php340
47
Illuminate\Database\Eloquent\Model getAttributeValue
…/vendor/illuminate/database/Eloquent/Concerns/HasAttributes.php313
46
Illuminate\Database\Eloquent\Model getAttribute
…/vendor/flarum/core/src/Database/AbstractModel.php118
45
Flarum\Database\AbstractModel getAttribute
…/vendor/illuminate/database/Eloquent/Model.php1382
44
Illuminate\Database\Eloquent\Model __get
…/vendor/flarum/core/src/Api/Serializer/BasicPostSerializer.php47
43
Flarum\Api\Serializer\BasicPostSerializer getDefaultAttributes
…/vendor/flarum/core/src/Api/Serializer/AbstractSerializer.php71
42
Flarum\Api\Serializer\AbstractSerializer getAttributes
…/vendor/tobscure/json-api/src/Resource.php169
41
Tobscure\JsonApi\Resource getAttributes
…/vendor/tobscure/json-api/src/Resource.php75
40
Tobscure\JsonApi\Resource toArray
…/vendor/tobscure/json-api/src/Document.php187
39
Tobscure\JsonApi\Document Tobscure\JsonApi\{closure}
[internal]0
38
 array_map
…/vendor/tobscure/json-api/src/Document.php188
37
Tobscure\JsonApi\Document toArray
…/vendor/tobscure/json-api/src/Document.php224
36
Tobscure\JsonApi\Document jsonSerialize
…/vendor/flarum/core/src/Api/JsonApiResponse.php29
35
Flarum\Api\JsonApiResponse __construct
…/vendor/flarum/core/src/Api/Controller/AbstractSerializeController.php113
34
Flarum\Api\Controller\AbstractSerializeController handle
…/vendor/flarum/core/src/Api/Client.php71
33
Flarum\Api\Client send
…/vendor/flarum/core/src/Forum/Content/Index.php91
32
Flarum\Forum\Content\Index getApiDocument
…/vendor/flarum/core/src/Forum/Content/Index.php59
31
Flarum\Forum\Content\Index __invoke
…/vendor/flarum/core/src/Frontend/Frontend.php65
30
Flarum\Frontend\Frontend populate
…/vendor/flarum/core/src/Frontend/Frontend.php57
29
Flarum\Frontend\Frontend document
…/vendor/flarum/core/src/Frontend/Controller.php34
28
Flarum\Frontend\Controller handle
…/vendor/flarum/core/src/Http/RouteHandlerFactory.php40
27
Flarum\Http\RouteHandlerFactory Flarum\Http\{closure}
…/vendor/flarum/core/src/Http/Middleware/DispatchRoute.php67
26
Flarum\Http\Middleware\DispatchRoute process
…/vendor/zendframework/zend-stratigility/src/Next.php52
25
Zend\Stratigility\Next handle
…/vendor/flarum/core/src/Http/Middleware/ShareErrorsFromSession.php58
24
Flarum\Http\Middleware\ShareErrorsFromSession process
…/vendor/zendframework/zend-stratigility/src/Next.php52
23
Zend\Stratigility\Next handle
…/vendor/flarum/core/src/Http/Middleware/SetLocale.php51
22
Flarum\Http\Middleware\SetLocale process
…/vendor/zendframework/zend-stratigility/src/Next.php52
21
Zend\Stratigility\Next handle
…/vendor/flarum/core/src/Http/Middleware/AuthenticateWithSession.php34
20
Flarum\Http\Middleware\AuthenticateWithSession process
…/vendor/zendframework/zend-stratigility/src/Next.php52
19
Zend\Stratigility\Next handle
…/vendor/flarum/core/src/Http/Middleware/RememberFromCookie.php52
18
Flarum\Http\Middleware\RememberFromCookie process
…/vendor/zendframework/zend-stratigility/src/Next.php52
17
Zend\Stratigility\Next handle
…/vendor/flarum/core/src/Http/Middleware/StartSession.php62
16
Flarum\Http\Middleware\StartSession process
…/vendor/zendframework/zend-stratigility/src/Next.php52
15
Zend\Stratigility\Next handle
…/vendor/flarum/core/src/Http/Middleware/CollectGarbage.php48
14
Flarum\Http\Middleware\CollectGarbage process
…/vendor/zendframework/zend-stratigility/src/Next.php52
13
Zend\Stratigility\Next handle
…/vendor/flarum/core/src/Http/Middleware/ParseJsonBody.php29
12
Flarum\Http\Middleware\ParseJsonBody process
…/vendor/zendframework/zend-stratigility/src/Next.php52
11
Zend\Stratigility\Next handle
…/vendor/flarum/core/src/Http/Middleware/HandleErrorsWithWhoops.php43
10
Flarum\Http\Middleware\HandleErrorsWithWhoops process
…/vendor/zendframework/zend-stratigility/src/Next.php52
9
Zend\Stratigility\Next handle
…/vendor/zendframework/zend-stratigility/src/MiddlewarePipe.php91
8
Zend\Stratigility\MiddlewarePipe process
…/vendor/middlewares/request-handler/src/RequestHandler.php84
7
Middlewares\RequestHandler process
…/vendor/zendframework/zend-stratigility/src/MiddlewarePipe.php78
6
Zend\Stratigility\MiddlewarePipe handle
…/vendor/middlewares/base-path-router/src/BasePathRouter.php97
5
Middlewares\BasePathRouter process
…/vendor/zendframework/zend-stratigility/src/MiddlewarePipe.php78
4
Zend\Stratigility\MiddlewarePipe handle
…/vendor/middlewares/base-path/src/BasePath.php53
3
Middlewares\BasePath process
…/vendor/zendframework/zend-stratigility/src/MiddlewarePipe.php78
2
Zend\Stratigility\MiddlewarePipe handle
…/vendor/zendframework/zend-httphandlerrunner/src/RequestHandlerRunner.php95
1
Zend\HttpHandlerRunner\RequestHandlerRunner run
…/vendor/flarum/core/src/Http/Server.php46
0
Flarum\Http\Server listen
…/public/index.php22

As a simple test, I also tried installing beta 8 from scratch without migrating from my old forum, and that worked fine.

Frink

holyfuzz What is the contents of your index.php file?

holyfuzz

Frink What is the contents of your index.php file?

I assume you're talking about my public/index.php file, which I have not modified:

<?php

/*
 * This file is part of Flarum.
 *
 * (c) Toby Zerner <toby.zerner@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

require '../vendor/autoload.php';

$server = new Flarum\Http\Server(
    Flarum\Foundation\Site::fromPaths([
        'base' => __DIR__.'/..',
        'public' => __DIR__.'/../public',
        'storage' => __DIR__.'/../storage',
    ])
);

$server->listen();

majoskorec

hi i have the same problem

majoskorec

make sure you have correct file permissions for project and try php flarum cache:clear

luceos

Try deleting storage/cache/textformatter/*

holyfuzz

luceos Try deleting storage/cache/textformatter/*

I have no textformatter folder in my storage/cache directory. (The only thing in that folder is another folder called 77.)

As an experiment, I just tried deleting the whole cache folder, which seemed to have no effect.

holyfuzz

So I noticed that the error contains __PHP_Incomplete_Class. I'm not a PHP programmer so I'm not sure of this, but I gather that has something to do with deserializing an object of an unknown/missing class type? If so, could this possibly be caused by an extension that I was using prior to upgrading that serialized an object to the database, and now that the extension is no longer installed, that object's class doesn't exist? Here's a list of all the non-builtin extensions I was using in beta 7:

EXT flagrow-analytics 0.5.0
EXT flagrow-terms 0.2.3
EXT sijad-recaptcha 0.0.2
EXT flagrow-image-upload 0.3.1
EXT xengine-markdown-editor 1.3.1
EXT s9e-mediaembed 0.3.2
EXT avatar4eg-users-list 0.1.1
EXT vingle-share-social 0.1.0

Is there any way to enable an extension from the command line without using the admin panel? (Since the admin panel just gives me the same original error.) I'm wondering whether maybe if I install and enabled all the extensions I used to be using (the subset of those that have been updated for beta 8), maybe that will provide the missing class and fix the problem? (Though my beta 7 forum loads fine without all those extensions enabled, which casts some doubt on this hypothesis.)