Dokuwiki: HTTP 500 Error on Configuration page

[wangxu94]

Description

Since the latest upgrade, I have been getting a blank page with a HTTP 500 error when trying to navigate to the configuration page. I am still able to make changes to the configuration by editing the local.php file, and these changes do take effect.

Specs:

Dokuwiki version: Release 2020-07-29 "Hogfather"
Skin: Bootstrap3 v2020-07-29; also tested with default Dokuwiki skin
Server OS: Ubuntu Server 16.04
Client OS: Windows 10
Browser: Firefox 79.0; also tested with Vivaldi 3.1.1929.48

Console log:

GEThttps://<dokuwiki url>/doku.php?id=start&do=admin&page=config
[HTTP/1.0 500 Internal Server Error 29ms]


GET
    https://<dokuwiki url>/doku.php?id=start&do=admin&page=config
Status500
Internal Server Error
VersionHTTP/1.0
Transferred402 B (0 B size)


Cache-Control
    no-store, no-cache, must-revalidate
Connection
    close
Content-Length
    0
Content-Type
    text/html; charset=UTF-8
Date
    Sun, 02 Aug 2020 02:50:01 GMT
Expires
    Thu, 19 Nov 1981 08:52:00 GMT
Pragma
    no-cache
Server
    Apache/2.4.18 (Ubuntu)
Strict-Transport-Security
    max-age=31536000; includeSubDomains
Vary
    Cookie
X-Frame-Options
    SAMEORIGIN

Accept
    text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Encoding
    gzip, deflate, br
Accept-Language
    en-US,en;q=0.5
Cache-Control
    max-age=0
Connection
    keep-alive
Cookie
    *****; DOKU_PREFS=list%23thumbs%23link%233%23align%231%23size%234%23ext_enabled%231%23ext_disabled%231%23ext_updatable%231%23wrapCtl%23soft%23plugin_prosemirror_useWYSIWYG%23; DokuWiki=****
    1
Host
    <dokuwiki url>
Referer
    https://<dokuwiki url>/doku.php?id=start&do=admin
Upgrade-Insecure-Requests
    1
User-Agent
    Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:79.0) Gecko/20100101 Firefox/79.0
Source map error: Error: NetworkError when attempting to fetch resource.
Resource URL: moz-extension://81378ce2-23b4-47a1-9aa7-c313f693a27d/browser-polyfill.min.js
Source Map URL: browser-polyfill.min.js.map

GEThttps://<dokuwiki url>/favicon.ico
[HTTP/1.1 404 Not Found 6ms]


GET
    https://<dokuwiki url>/favicon.ico
Status404
Not Found
VersionHTTP/1.1
Transferred590 B (280 B size)


Accept
    image/webp,*/*
Accept-Encoding
    gzip, deflate, br
Accept-Language
    en-US,en;q=0.5
Cache-Control
    max-age=0
Connection
    keep-alive
Cookie
    ****; DOKU_PREFS=list%23thumbs%23link%233%23align%231%23size%234%23ext_enabled%231%23ext_disabled%231%23ext_updatable%231%23wrapCtl%23soft%23plugin_prosemirror_useWYSIWYG%23; DokuWiki=****
    1
Host
    <dokuwiki url>
User-Agent
    Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:79.0) Gecko/20100101 Firefox/79.0

​
Please let me know if you need any more information. Thanks!

[wangxu94]

Could not replicate this issue on a fresh install so obviously a user-error. My bad.

[Klap-in]

To discover the cause of a 500-error you have to check the webserver log to see where it stopped. See also https://www.dokuwiki.org/bugs#server_php_error_logs

[wangxu94]

@Klap-in Thanks for the tip — I did check the apache error log, but there didn't seem to be anything helpful there. I eventually discovered that the problem was caused by the LaTeXit Plugin.

[phy25]

@wangxu94 Thanks for reporting back the issue. We would appreciate it if you could also report this to https://github.com/Wrent/dokuwiki-plugin-latexit/issues.

[wangxu94]

@phy25 The latexit plugin doesn't seem to cause this issue on a fresh install. I also had other intersecting issues such as the editor and other buttons not loading correctly once I pointed a fresh install to my existing data directory. Clearing the cache did not help, and neither did running the cleanup script here.

I eventually resolved the issue by copying the media and pages folders to a new data directory and using that. Unfortunately I don't have the time or patience to troubleshoot this any further so I'll just have to chalk this up to something in my existing data directory being borked. Thanks for your comment though, I appreciate your time and all your work on dokuwiki.