Editor does not load on latest Nextcloud stable 18.0.4

[Mathieu Durero]

Steps to reproduce

1. Install Nextcloud 18.0.4 (from .zip archive)
2. Disable Text application.
3. Install & enable Plain text editor from app store.
4. create a file abc.txt
5. try to open this file

Expected behaviour

Old style plain text editor is loaded, file abc.txt is displayed and you can write whatever you want in it.

Actual behaviour

Nothing happens. Webpage stays still on file list. Firefox javascript console shows error.

Server configuration

Operating system: Debian 10.3 - Buster - stable from February 2020, Linux kernel 4.9.58 x86_64

Web server: Apache2 2.4.38 from distribution packaging, FPM-fcgi

Database: MariaDB 10.3.22 from distribution packaging

PHP version: 7.3.14-1~deb10u1
Modules loaded: Core, date, libxml, openssl, pcre, zlib, filter, hash, Reflection, SPL, session, sodium, standard, cgi-fcgi, mysqlnd, PDO, xml, apcu, bz2, calendar, ctype, curl, dom, mbstring, fileinfo, ftp, gd, gettext, gmp, iconv, igbinary, imagick, imap, intl, json, ldap, exif, mysqli, pdo_mysql, pdo_sqlite, apc, posix, readline, recode, redis, shmop, SimpleXML, sockets, sqlite3, sysvmsg, sysvsem, sysvshm, tokenizer, wddx, xmlreader, xmlwriter, xsl, zip, Phar, Zend OPcache

Nextcloud version: 18.0.4 - 18.0.4.2

Where did you install Nextcloud from: nextcloud-18.0.4.zip from download.nextcloud.com

List of activated apps:
Enabled:

• cloud_federation_api: 1.1.0
• dav: 1.14.0
• federatedfilesharing: 1.8.0
• files: 1.13.1
• files_sharing: 1.10.1
• files_texteditor: 2.11.0
• files_trashbin: 1.8.0
• files_versions: 1.11.0
• groupfolders: 6.0.6
• issuetemplate: 0.6.0
• lookup_server_connector: 1.6.0
• notifications: 2.6.0
• oauth2: 1.6.0
• privacy: 1.2.0
• provisioning_api: 1.8.0
• settings: 1.0.0
• theming: 1.9.0
• twofactor_backupcodes: 1.7.0
• user_ldap: 1.8.0
• viewer: 1.2.0
• workflowengine: 2.0.0

Disabled:

• accessibility
• activity
• admin_audit
• comments
• encryption
• federation
• files_external
• files_pdfviewer
• files_rightclick
• files_videoplayer
• firstrunwizard
• logreader
• nextcloud_announcements
• password_policy
• photos
• recommendations
• serverinfo
• sharebymail
• support
• survey_client
• systemtags
• text
• updatenotification

Nextcloud configuration:

{
    "passwordsalt": "***REMOVED SENSITIVE VALUE***",
    "secret": "***REMOVED SENSITIVE VALUE***",
    "trusted_domains": [
        "our-base-url.org"
    ],
    "datadirectory": "***REMOVED SENSITIVE VALUE***",
    "overwrite.cli.url": "https:\/\/our-base-url.org",
    "htaccess.RewriteBase": "\/",
    "dbtype": "mysql",
    "version": "18.0.4.2",
    "dbname": "***REMOVED SENSITIVE VALUE***",
    "dbhost": "***REMOVED SENSITIVE VALUE***",
    "dbport": "",
    "dbtableprefix": "oc_",
    "mysql.utf8mb4": true,
    "dbuser": "***REMOVED SENSITIVE VALUE***",
    "dbpassword": "***REMOVED SENSITIVE VALUE***",
    "installed": true,
    "instanceid": "***REMOVED SENSITIVE VALUE***",
    "memcache.local": "\\OC\\Memcache\\APCu",
    "memcache.distributed": "\\OC\\Memcache\\Redis",
    "redis": {
        "host": "***REMOVED SENSITIVE VALUE***",
        "port": 6379
    },
    "memcache.locking": "\\OC\\Memcache\\Redis",
    "filelocking.enabled": true,
    "enable_previews": false,
    "log_type": "owncloud",
    "logfile": "\/var\/log\/nextcloud\/domain.log",
    "loglevel": 0,
    "maintenance": false,
    "mail_smtpmode": "sendmail",
    "mail_smtpauthtype": "LOGIN",
    "mail_from_address": "***REMOVED SENSITIVE VALUE***",
    "mail_domain": "***REMOVED SENSITIVE VALUE***",
    "theme": "",
    "ldapIgnoreNamingRules": false,
    "ldapProviderFactory": "\\OCA\\User_LDAP\\LDAPProviderFactory",
    "skeletondirectory": "\/data\/nextcloud\/CJCmaitre\/files\/cloud_default_files",
    "data-fingerprint": "153cdd3bb52ce52a05ec1270d2e4fa04",
    "updater.release.channel": "stable",
    "updater.secret": "***REMOVED SENSITIVE VALUE***"
}

Client configuration

Browser: Mozilla Firefox Quantum 68.7.0esr (64-bit)
Chromium Version 73.0.3683.75 (Developer Build) built on Debian 9.8, running on Debian 9.12 (64-bit)

Operating system: Debian 9.12 - Stretch - oldstable

Logs

Nextcloud log (data/owncloud.log)

No log seems relevant at loglevel 0, no log was written for 5 minutes at file opening try time, no log was written during the next 5 minutes.

Browser log

Unhandled promise rejection ChunkLoadError: "Loading chunk 22 failed.
(error: https://our-base-url.org/apps/files_texteditor/build/vendors~ace.bundle.js)"
    Webpack 10
        e
        a
        _onEditorTrigger
        action
        _onClickFile
        I
        i
        w
        dispatch
        handle
ncvuecomponents.js:334:29396
    e ncvuecomponents.js:334
    exports ncvuecomponents.js:334
    B ncvuecomponents.js:334
    exports _invoke.js:5
    <anonymous> _task.js:35
    v _task.js:21
    y _task.js:25

[Mathieu Durero]

Problem solved : due to an archaic line in global Apache2 configuration, scripts weren't properly sent to the browser. The Text app was also affected.

So at the end, the effect was that some files containing a "~" in their names were denied silently.
I honestly don't really understand why it affected only some of the files and not all of them.

Sorry for the almost useless issue (except if by outstanding chance someone with exactly the same loading error passes by) and may you enjoy life despite sanitary crisis !