Cant change teh colour of the theme

Steps to reproduce

Go to theme
To to colour
select a colour you want liek to have

Expected behaviour

it should chnage teh colour of the theme.

Actual behaviour

Its loading and loading … after a few hours still nothink hapened. Ive restarted the server several times ive been trying it over 4 days but I couldn#t help myself.

Server configuration detail

Operating system: Linux 4.9.0-9-amd64 #1 SMP Debian 4.9.168-1+deb9u2 (2019-05-13) x86_64

Webserver: Apache (fpm-fcgi)

Database: sqlite3 3.28.0

PHP version:

7.1.31
Modules loaded: Core, date, libxml, openssl, pcre, zlib, bcmath, bz2, calendar, ctype, dba, dom, hash, fileinfo, filter, ftp, SPL, iconv, mbstring, pcntl, session, standard, Phar, memcached, posix, Reflection, shmop, SimpleXML, soap, sockets, exif, sysvmsg, sysvsem, sysvshm, tokenizer, wddx, xml, xmlreader, xmlwriter, zip, cgi-fcgi, mysqlnd, PDO, apcu, curl, gd, gettext, imagick, imap, intl, json, mcrypt, mysqli, pdo_mysql, pdo_pgsql, pdo_sqlite, pgsql, redis, sqlite3, xmlrpc, xsl, ionCube Loader, Zend OPcache

Nextcloud version: 17.0.2 - 17.0.2.1

Updated from an older Nextcloud/ownCloud or fresh install:

Where did you install Nextcloud from: unknown

Signing status

Array
(
)

List of activated apps
Enabled:
 - accessibility: 1.3.0
 - activity: 2.10.1
 - apporder: 0.9.0
 - bruteforcesettings: 1.4.0
 - calendar: 1.7.1
 - camerarawpreviews: 0.7.2
 - checksum: 0.4.3
 - circles: 0.17.10
 - cloud_federation_api: 1.0.0
 - comments: 1.7.0
 - contacts: 3.1.6
 - cookbook: 0.5.6
 - cospend: 0.2.0
 - data_request: 1.4.0
 - dav: 1.13.0
 - deck: 0.7.0
 - drawio: 0.9.4
 - event_update_notification: 1.0.0
 - federatedfilesharing: 1.7.0
 - federation: 1.7.0
 - files: 1.12.0
 - files_antivirus: 2.2.1
 - files_fulltextsearch: 1.3.6
 - files_fulltextsearch_tesseract: 1.3.1
 - files_mindmap: 0.0.15
 - files_pdfviewer: 1.6.0
 - files_rightclick: 0.15.1
 - files_sharing: 1.9.0
 - files_trashbin: 1.7.0
 - files_versions: 1.10.0
 - files_videoplayer: 1.6.0
 - firstrunwizard: 2.6.0
 - flowupload: 0.1.7
 - fulltextsearch: 1.3.6
 - fulltextsearch_elasticsearch: 1.4.0
 - gallery: 18.4.0
 - group_everyone: 0.1.3
 - issuetemplate: 0.6.0
 - logreader: 2.2.0
 - lookup_server_connector: 1.5.0
 - maps: 0.1.2
 - mood: 0.5.0
 - music: 0.12.1
 - nextcloud_announcements: 1.6.0
 - notes: 3.1.0
 - notifications: 2.5.0
 - oauth2: 1.5.0
 - ocr: 4.4.28
 - ocsms: 2.1.6
 - ojsxc: 3.4.4
 - onlyoffice: 4.0.0
 - password_policy: 1.7.0
 - phonetrack: 0.5.11
 - privacy: 1.1.0
 - provisioning_api: 1.7.0
 - quota_warning: 1.6.0
 - rainloop: 6.0.4
 - recommendations: 0.5.0
 - registration: 0.4.7
 - richdocuments: 3.5.0
 - serverinfo: 1.7.0
 - sharebymail: 1.7.0
 - sociallogin: 2.3.0
 - socialsharing_diaspora: 1.0.5
 - socialsharing_email: 1.0.6
 - socialsharing_facebook: 1.0.5
 - socialsharing_twitter: 1.0.5
 - spreed: 7.0.2
 - support: 1.0.1
 - survey_client: 1.5.0
 - systemtags: 1.7.0
 - talk_simple_poll: 1.0.0
 - tasks: 0.11.3
 - terms_of_service: 1.3.1
 - text: 1.1.1
 - theming: 1.8.0
 - theming_customcss: 1.5.0
 - twofactor_backupcodes: 1.6.0
 - updatenotification: 1.7.0
 - user_cas: 1.8.0
 - user_external: 0.7.0
 - video_converter: 0.1.2
 - viewer: 1.2.0
 - weather: 1.6.4
 - workflowengine: 1.7.0
Disabled:
 - admin_audit
 - bookmarks
 - encryption
 - external
 - files_external
 - oidc_login
 - user_ldap

Configuration (config/config.php)
{
    "instanceid": "***REMOVED SENSITIVE VALUE***",
    "passwordsalt": "***REMOVED SENSITIVE VALUE***",
    "secret": "***REMOVED SENSITIVE VALUE***",
    "trusted_domains": [
        "gamma.tgt.help"
    ],
    "datadirectory": "***REMOVED SENSITIVE VALUE***",
    "dbtype": "sqlite3",
    "version": "17.0.2.1",
    "overwrite.cli.url": "https:\/\/gamma.tgt.help",
    "installed": true,
    "mail_smtpmode": "smtp",
    "mail_smtpsecure": "ssl",
    "mail_sendmailmode": "smtp",
    "mail_from_address": "***REMOVED SENSITIVE VALUE***",
    "mail_domain": "***REMOVED SENSITIVE VALUE***",
    "mail_smtpauthtype": "LOGIN",
    "mail_smtpauth": 1,
    "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
    "mail_smtpport": "465",
    "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
    "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
    "maintenance": false,
    "app_install_overwrite": [
        "ojsxc"
    ]
}

Are you using external storage, if yes which one: local/smb/sftp/…

Are you using encryption:

Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/…

Client configuration

Browser: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36

Operating system: Ive tried it on Windows 10 and also on Windows 10 Pro (Enterprise) and also on my MAc

Logs

Web server error log
Insert your web server log here 
Nextcloud log
Insert your Nextcloud log here
Browser log

Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log
c) ...