Skip Navigation

This is the technical support forum for WPML - the multilingual WordPress plugin.

Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.

This topic contains 4 replies, has 2 voices.

Last updated by martineG-3 2 years, 4 months ago.

Assigned support staff: Carlos Rojas.

Author Posts
September 13, 2019 at 8:12 am #4566389


I receive following report regarding updating WPML Translation Management.

Een fout van het type E_ERROR werd veroorzaakt op regelnummer 41 van het bestand /home/svrarchitects/domains/ Foutmelding: Uncaught TypeError: Argument 1 passed to WPML_TM_Unsent_Jobs::prepare_unsent_job_for_notice() must be an instance of WPML_Translation_Job, boolean given, called in /home/svrarchitects/domains/ on line 288 and defined in /home/svrarchitects/domains/
Stack trace:
#0 /home/svrarchitects/domains/ WPML_TM_Unsent_Jobs->prepare_unsent_job_for_notice(false)
#1 /home/svrarchitects/domains/ WP_Hook->apply_filters(NULL, Array)
#2 /home/svrarchitects/domains/ WP_Hook->do_action(Array)
#3 /home/svrarchitects/domains/

What does this mean?
Thanks for looking into it.

September 13, 2019 at 2:57 pm #4569709

Carlos Rojas

Languages: English (English ) Spanish (Español )

Timezone: Europe/Madrid (GMT+01:00)

Thank you for contacting WPML support.

I suspect we might be facing a compatibility issue with a third party functionality. In this case I would like to ask you to follow this steps in order to isolate the cause of the issue:
- Back up your site first before making any change, this is for security reasons.
- Update all outdated plugins and themes.
- Flush any cache memory that might exists.
- Deactivate all the plugins that are not related to WPML.
- Switch for a moment to a WordPress default theme like Twenty Seventeen.
- Go to WPML -> Support -> Troubleshooting link -> Apply the troubleshooting steps highlighted in the attached image.
- If the issue is gone, activate one by one to see with which one there is an interaction issue.

Could you tell me the result of this steps?

Kind regards,

FireShot Capture 637 - Troubleshooting ‹ Sandbox — WordPress -
September 16, 2019 at 8:49 am #4577601


Hello Carlos, Thanks for your help. The issue seems to be resolved even before following your steps. When the problem re-occurs I know what to do. Cheers, Tony

September 16, 2019 at 10:05 am #4578457

Carlos Rojas

Languages: English (English ) Spanish (Español )

Timezone: Europe/Madrid (GMT+01:00)

Hi Tony,

I'm glad to hear that the issue is solved 🙂

Please don't hesitate to contact us if you need our help in the future with WPML. We will be more than happy to help.
Best regards,

September 23, 2019 at 8:56 am #4621821


Hello Carlos,
The same issue has returned.
I can't see to figure out which third party plugin might be causing the problem.
Can you help out?
Thanks in advance.