Support » Plugin: BackWPup - WordPress Backup Plugin » Warning: call_user_func_array parameter issue

  • Resolved Jeff Lambert


    I’m looking at the error log for a multisite (3 sites) that I’m performing maintenance on today. Each day I get the following error repeated 6 times:

    [16-May-2018 13:39:04 UTC] PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, class ‘BackWPup_Cron’ does not have a method ‘update_message’ in /home/markengl/public_html/wp-includes/class-wp-hook.php on line 286

    I’m running v3.4.5 of BackWPup and v9.4.5 of WP.

    While unrelated, this multisite is the same one that I was getting 3 backups created each day instead of the 1. I did put in a fix from that thread, which fixed that issue.

    Thanks for the plugin!



Viewing 5 replies - 1 through 5 (of 5 total)
  • Plugin Support duongcuong96


    Could you please give me your PHP info?
    go to BackWPUp -> Settings -> Infomation -> and press “Get debug info”

    Thread Starter Jeff Lambert


    Sure @duongcuong96:

    WordPress version: 4.9.5
    BackWPup version: 3.4.5
    PHP version: 7.0.30 (64bit)
    MySQL version: 5.6.38
    cURL version: 7.59.0
    cURL SSL version: OpenSSL/1.0.2o
    WP-Cron url:
    Server self connect: Response Test O.K.
    Document root: redacted
    Temp folder: redacted/wp-content/uploads/backwpup-154ef9-temp/
    Log folder: redacted/wp-content/uploads/backwpup-154ef9-logs/
    Server: Apache
    Operating System: Linux
    PHP SAPI: apache2handler
    Current PHP user: markengl
    Maximum execution time: 300 seconds
    Alternative WP Cron: Off
    Disabled WP Cron: Off
    CHMOD Dir: 0755
    Server Time: 5:13
    Blog Time: 22:13
    Blog Timezone: America/Los_Angeles
    Blog Time offset: -7 hours
    Blog language: en-US
    MySQL Client encoding: utf8
    PHP Memory limit: 268435456
    WP memory limit: 64M
    WP maximum memory limit: 256M
    Memory in use: 10.00 MB
    Loaded PHP Extensions:: Core, PDO, Phar, Reflection, SPL, SimpleXML, apache2handler, bcmath, bz2, calendar, ctype, curl, date, dom, exif, filter, ftp, gd, gettext, hash, iconv, imap, ionCube Loader, json, libxml, mbstring, mcrypt, mysqli, mysqlnd, openssl, pcre, pdo_mysql, pdo_pgsql, pdo_sqlite, pgsql, posix, pspell, session, soap, sockets, sqlite3, standard, tokenizer, wddx, xml, xmlreader, xmlrpc, xmlwriter, xsl, zip, zlib

    Plugin Support Andreas W.


    Hi @all,

    we have a new version on github fixing bugs of 3.5.0. You can download it here
    Would be great if we get some feedback before we release on

    Thanks a lot for your help!

    Plugin Support duongcuong96


    Hi there,
    The new 3.5.1 version has been released with bugs fixed, please update as soon as possible.
    If you still have any problem, just let me know 🙂

    Btw, If you find BackWPUp is useful for you, we would really appreciate if you leave a positive review and rating.
    This would encourage us to develop new free features and provide free support 😀
    Thank you 🙂

    Thread Starter Jeff Lambert


    Hello @duongcuong96 — I installed 3.5.1 a few days ago and it fixed the multi-instance backups in multisite and also checked the error log and haven’t gotten the error noted in this ticket since the upgrade. Thanks for the fixes and the plugin. Left a review.


Viewing 5 replies - 1 through 5 (of 5 total)
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