backup error with xml-export

This is the error:

Call to a member function get_element_id() on null

@julia0902
Sorry to you too, we didn’t identify which cased the issue yet :/
Could you list all the activated plugins on your site to me?
Thank you!

Hi there,

thanks for your Reply.

I’m using the child theme from flatsome v3.0 from flatsome theme v3.7.1

Here are the activated Plugins:

– BackWPup Version 3.6.6 / Inpsyde GmbH
– Booster for WooCommerce Version 4.0.1 | Algoritmika Ltd
– Coming Soon Page & Maintenance Mode Version 5.0.23 | SeedProd
– Contact Form 7 Version 5.0.5 | Takayuki Miyoshi
– Flexible Shipping Version 3.0.6 | WP Desk
– GDPR Cookie Consent Version 1.7.1 | WebToffee

sorry, not ready yet….. one Moment…

Here are the activated Plugins:
– BackWPup Version 3.6.6 / Inpsyde GmbH
– Booster for WooCommerce Version 4.0.1 | Algoritmika Ltd
– Coming Soon Page & Maintenance Mode Version 5.0.23 | SeedProd
– Contact Form 7 Version 5.0.5 | Takayuki Miyoshi
– Flexible Shipping Version 3.0.6 | WP Desk
– GDPR Cookie Consent Version 1.7.1 | WebToffee
– Google Tag Manager for WordPress Version 1.9 | Thomas Geiger
– Health Check & Troubleshooting Version 1.2.1 | Die www.ads-software.com-Community
– Loco Translate Version 2.2.0 | Tim Whitlock
– MailChimp for WordPress Version 4.3.1 | ibericode
– MaxButtons Version 7.7 | Max Foundry
– MC4WP – WPML Version 1.0 | ibericode
– miniOrange 2 Factor Authentication Version 5.1.10 | miniOrange
– WooCommerce Version 3.5.2 | Automattic
– WooCommerce Continue Shopping Version 1.3.1 | HappyKite
– WooCommerce Multilingual Version 4.3.7 | OnTheGoSystems
– WooCommerce PayPal Checkout Gateway Version 1.6.5 | WooCommerce
– WooCommerce Product Sort and Display LITE Version 1.8.4 | a3rev Software
– WooCommerce SEO Addon Version 1.1.5 | premmerce
– WooCommerce Stripe-Gateway Version 4.1.13 | WooCommerce
– WP GDPR Compliance Version 1.4.5 | Van Ons
– WP Mail Logging Version 1.8.5 | Christian Z?ller
– WP SES Version 0.8.1 | Delicious Brains Inc
– WPML Multilingual CMS Version 4.1.1 | OnTheGoSystems
– WPML String Translation Version 2.9.0 | OnTheGoSystems
– WPML Translation Management Version 2.7.0 | OnTheGoSystems
– Yoast SEO Version 9.2.1 | Team Yoast

Puuuh! : -) Quiet a lot…

As I wrote, I made some updates and after that, I had this XML-export-error. Is there a possibility, where I can see, which updates I made on which day? Then I could give you a better hint of the Plugins which might be involved…

Thank you!

hi @julia0902,
Could you please use Health Check & Troubleshooting plugin to enable *only* BackWPUp then try to run a test backup, then after that, if it works, try to enable each plugin one by one and do the backup test again to find what caused the issue?

No worry since the Health Check plugin will not make changes to your site, after disable troubleshooting mode, all your plugins and themes will be back to normal.

Thank you ??

Hi @julia0902,
I found a report about extract issue like you in here, could you please take a look?
https://wpml.org/forums/topic/fatal-error-call-to-a-member-function-get_element_id-on-null/
The author said that issue will be fixed in WPML 4.1.2.
I’m not sure but maybe that can help?
Thanks!

Hi @duongcuong96,

thank you a lot for the article.

I used the Troubleshooting plugin and I activated only BackWPUp. Then I started a backup only with the XML-Support and I got the error message again.

–> FEHLER: Ausnahme eingefangen in Error: Call to a member function get_element_id() on null

So that would mean to me, that this is only a BackWPuo-plugin issue and not a conflict with another, isn’t it?

Best regards,
Julia

@julia0902
Thank you for your help, sorry but we were unable to reproduce this issue our self :/
Could you please give us basic server info by going to BackWPUp -> Settings -> Infomation -> and press “Get debug info”?
thank you very much!

Sure, thank you!

WordPress-Version: 4.9.8
BackWPup-Version: 3.6.6
PHP-Version: 7.0.30 (64bit)
MySQL-Version: 5.7.22
cURL-Version: 7.45.0
cURL-SSL-Version: OpenSSL/1.0.2o
WP-Cron-URL:: https://www.monpetitrouet.com/wp-cron.php
Verbindung zum Server selbst:: Response-Test OK
Document root: /opt/bitnami/apps/wordpress/htdocs
Temp-Verzeichnis:: /opt/bitnami/apps/wordpress/htdocs/wp-content/uploads/backwpup-43c6d9-temp/
Protokoll-Verzeichnis:: /opt/bitnami/apps/wordpress/htdocs/wp-content/uploads/backwpup-43c6d9-logs/
Server: Apache
Betriebssystem: Linux
PHP-SAPI: fpm-fcgi
Aktueller PHP-User: bitnami
Maximale Skript-Laufzeit: 120 Sekunden
BackWPup Maximale Script-Ausführungszeit: 30 Sekunden
Alternative WP Cron: Aus
WP Cron abgeschaltet: Aus
Verzeichnis-Rechte: 0755
Server-Zeit: 13:8
Zeit der Website: 14:08
Zeitzone der Website: Europe/Paris
Zeitverschiebung der Website: 1 Stunden
Sprache der Website: de-DE
Zeichensatz des MySQL-Clients: utf8
PHP-Memory-Limit: 256M
WordPress-Memory-Limit: 128M
Maximales WordPress-Memory-Limit: 256M
Benutzter Speicher: 18,00 MB
Geladene PHP-Erweiterungen:: Core, PDO, Phar, Reflection, SPL, SimpleXML, Zend OPcache, bcmath, bz2, calendar, cgi-fcgi, ctype, curl, date, dom, exif, fileinfo, filter, ftp, gd, gettext, gmp, hash, iconv, imap, intl, json, ldap, libxml, mbstring, mcrypt, mysqli, mysqlnd, openssl, pcntl, pcre, pdo_mysql, pdo_sqlite, posix, readline, session, soap, sockets, sqlite3, standard, tidy, tokenizer, xml, xmlreader, xmlrpc, xmlwriter, xsl, zip, zlib

@julia0902
Just so you know that I’m trying to reproduce the issue with WordPress Bitnami installer.
Hope I will find something new …

Hi there,

we are facing a similar issue, only thing we did to our site was updating:
BackWPup 3.6.6 on Nov 29
wpml-media-translation 2.4.0 on Nov 29
wpml-string-translation 2.9.0 on Nov 29
wpml-translate-management 2.7.0 on Nov 29
sitepress-multilingual-cms 4.1.0 (WPML core) on Nov 29
contact-form-7 5.1 on Dec 11

Last successful backup was on Nov 29 in the morning, all backups starting from Nov 30 have failed due to the WordPress XML export logging the error mentioned by julia0902

I have to admit, that we might have updated from an older version for each of those plugins (so we might have not run on “n-1” versions, but rather updated from “n-2” or “n-3”)

Solved for us, with updating WPML core to 4.1.2 as suggested.

Hi @internationalschoolcologne
Great to hear that ??
@julia0902
Is it possible to upgrade WPML to 4.1.2?
Thank you!

Hi @duongcuong96,

I have had already WPML 4.1.2.
But there were some updates the last days (also for the backup Plugin) and now it works!!!!

Thank you for all your help!
I wish everybody a good start in a Wonderful new year!

Julia