[Resolved] Migration from Polylang over to WPML is stalling
This thread is resolved. Here is a description of the problem and solution.
Problem:
I'm trying to migrate data from Polylang to WPML but the migration is hanging. I check the debug log and see this error
PHP Fatal error: Uncaught TypeError: Cannot access offset of type string on string in .../wp-content/plugins/migrate-polylang-to-wpml-0.4/classes/class-mpw_migrate_posts.php:89 Solution:
This issue happens when using PHP 8.0, to fix this issue, please follow steps below:
- Create a backup of your database and website before proceeding.
- Edit the file: /wp-content/plugins/migrate-polylang-to-wpml-0.4/classes/class-mpw_migrate_posts.php in your WordPress directory.
I'm trying to migrate from Polylang over to WPML but the migration is stalling. Migration has been running for 4hrs and it still only displays the following
Migration started, please don't close this window...
Moving your language settings...
Language settings has been migrated
Setting languages for posts...
My site isn't big. It only has 34 pages, 30 blog posts, 345 images and 10 custom posts (using Crocoblock's JetEngine and suite of widgets). FYI, site is in production and I do not have staging capabilities. Also, not that I think it matters here but, I'm currently in the process of converting it to Elementor's new container model.
Right now, had to perform a restore from a complete backup in order to get my site back up and running.
WP installation and widgets are all up to date. Following is my system info
== Server Environment ==
Operating System: Linux
Software: Apache
MySQL version: MariaDB Server v10.5.20
PHP Version: 8.2.6
PHP Memory Limit: 128M
PHP Max Input Vars: 1000
PHP Max Post Size: 100M
GD Installed: Yes
ZIP Installed: Yes
Write Permissions: All right
Elementor Library: Connected
== WordPress Environment ==
Version: 6.2.2
Site URL: <em><u>hidden link</u></em>
Home URL: <em><u>hidden link</u></em>
WP Multisite: No
Max Upload Size: 100 MB
Memory limit: 40M
Max Memory limit: 512M
Permalink Structure: /%postname%/
Language: en-US
Timezone: America/Toronto
Admin Email: mdugre@datatelcom.com
Debug Mode: Inactive
== Theme ==
Name: Hello Elementor Child
Version: 1.0.1
Author: Elementor Team
Child Theme: Yes
Parent Theme Name: Hello Elementor
Parent Theme Version: 2.7.1
Parent Theme Author: Elementor Team
== User ==
Role: administrator
WP Profile lang: en_US
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/113.0
== Active Plugins ==
Crocoblock Wizard
Version: 1.2.3
Author: Crocoblock
Elementor
Version: 3.13.4
Author: Elementor.com
Elementor Pro
Version: 3.13.2
Author: Elementor.com
Ivory Search (Premium)
Version: 5.5.1
Author: Ivory Search
JetBlocks For Elementor
Version: 1.3.5
Author: Crocoblock
JetElements For Elementor
Version: 2.6.10
Author: Crocoblock
JetEngine
Version: 3.1.6.1
Author: Crocoblock
JetEngine - Custom visibility conditions
Version: 1.1.0
Author: Crocoblock
JetEngine - dynamic tables builder
Version: 1.0.7
Author: Crocoblock
JetEngine - Trim string callback
Version: 1.0.0
Author: Crocoblock
JetFormBuilder
Version: 3.0.8
Author: Crocoblock
JetPlugins Dynamic Data Addon
Version: 1.3.1
Author: Crocoblock
JetPopup
Version: 2.0.0
Author: Crocoblock
JetSearch
Version: 3.0.3
Author: Crocoblock
JetSmartFilters
Version: 3.1.2
Author: Crocoblock
JetTabs For Elementor
Version: 2.1.21
Author: Crocoblock
JetTricks
Version: 1.4.4
Author: Crocoblock
Polylang
Version: 3.4.2
Author: WP SYNTEX
Polylang Connect for Elementor
Version: 2.4.1
Author: Creame
Rank Math SEO
Version: 1.0.116
Author: Rank Math
Rank Math SEO PRO
Version: 3.0.37
Author: Rank Math
Really Simple SSL
Version: 7.0.3
Author: Really Simple Plugins
Temporary Login Without Password
Version: 1.8.2
Author: StoreApps
UpdraftPlus - Backup/Restore
Version: 1.23.4
Author: UpdraftPlus.Com, DavidAnderson
Wordfence Security
Version: 7.9.3
Author: Wordfence
WordPress Importer
Version: 0.8.1
Author: wordpressdotorg
WP-Optimize - Clean, Compress, Cache
Version: 3.2.15
Author: David Anderson, Ruhani Rabin, Team Updraft
WP Fastest Cache
Version: 1.1.6
Author: Emre Vona
WP Mail SMTP
Version: 3.8.0
Author: WP Mail SMTP
== Features ==
Custom Fonts: 0
Custom Icons: 0
== Integrations ==
recaptcha_v3: Active
== Elementor Experiments ==
Optimized DOM Output: Active
Improved Asset Loading: Active
Improved CSS Loading: Active
Inline Font Icons: Inactive
Accessibility Improvements: Active
Additional Custom Breakpoints: Active
admin_menu_rearrangement: Inactive by default
Flexbox Container: Active
Upgrade Swiper Library: Inactive by default
Grid Container: Inactive by default
Default to New Theme Builder: Active
Hello Theme Header & Footer: Inactive
Editor Top Bar: Inactive by default
Landing Pages: Inactive
Nested Elements: Inactive
Lazy Load Background Images: Inactive
Page Transitions: Inactive
Notes: Inactive
Loop: Active
Form Submissions: Active
Scroll Snap: Inactive
Menu: Inactive
== Log ==
Log: showing 20 of 322023-05-11 17:07:27 [info] elementor-pro::elementor_pro_updater Started
2023-05-11 17:07:27 [info] Elementor Pro/Upgrades - _on_each_version Start
2023-05-11 17:07:27 [info] Elementor Pro/Upgrades - _on_each_version Finished
2023-05-11 17:07:27 [info] Elementor data updater process has been completed. [array (
'plugin' => 'Elementor Pro',
'from' => '3.13.0',
'to' => '3.13.1',
)]
2023-05-11 17:07:27 [info] Elementor data updater process has been queued. [array (
'plugin' => 'Elementor Pro',
'from' => '3.13.0',
'to' => '3.13.1',
)]
2023-05-11 17:07:28 [info] Elementor data updater process has been queued. [array (
'plugin' => 'Elementor Pro',
'from' => '3.13.0',
'to' => '3.13.1',
)]
2023-05-23 08:06:44 [info] elementor::elementor_updater Started
2023-05-23 08:06:45 [info] Elementor/Upgrades - _on_each_version Start
2023-05-23 08:06:45 [info] Elementor/Upgrades - _on_each_version Finished
2023-05-23 08:06:45 [info] Elementor data updater process has been completed. [array (
'plugin' => 'Elementor',
'from' => '3.13.2',
'to' => '3.13.3',
)]
2023-05-23 08:06:50 [info] elementor-pro::elementor_pro_updater Started
2023-05-23 08:06:50 [info] Elementor Pro/Upgrades - _on_each_version Start
2023-05-23 08:06:50 [info] Elementor Pro/Upgrades - _on_each_version Finished
2023-05-23 08:06:50 [info] Elementor data updater process has been completed. [array (
'plugin' => 'Elementor Pro',
'from' => '3.13.1',
'to' => '3.13.2',
)]
2023-05-28 21:11:49 [info] Elementor data updater process has been queued. [array (
'plugin' => 'Elementor',
'from' => '3.13.3',
'to' => '3.13.4',
)]
2023-05-28 21:11:50 [info] elementor::elementor_updater Started
2023-05-28 21:11:50 [info] Elementor/Upgrades - _on_each_version Start
2023-05-28 21:11:50 [info] Elementor/Upgrades - _on_each_version Finished
2023-05-28 21:11:50 [info] Elementor data updater process has been completed. [array (
'plugin' => 'Elementor',
'from' => '3.13.3',
'to' => '3.13.4',
)]
2023-05-28 21:11:51 [info] Elementor data updater process has been queued. [array (
'plugin' => 'Elementor',
'from' => '3.13.3',
'to' => '3.13.4',
)]
PHP: showing 5 of 5PHP: 2023-05-12 10:31:45 [warning X 8][/ebs2/vhosts/datatelcom.com/datatelcom.com/wp-content/plugins/elementor-pro/core/utils.php::373] Undefined array key "name" [array (
'trace' => '
#0: Elementor\Core\Logger\Manager -> shutdown()
',
)]
PHP: 2023-05-15 08:13:36 [warning X 193][/ebs2/vhosts/datatelcom.com/datatelcom.com/wp-content/plugins/elementor/includes/managers/image.php::108] Trying to access array offset on value of type bool [array (
'trace' => '
#0: Elementor\Core\Logger\Manager -> shutdown()
',
)]
PHP: 2023-05-31 08:57:47 [warning X 1][/ebs2/vhosts/datatelcom.com/datatelcom.com/wp-content/plugins/elementor/modules/history/revisions-manager.php::363] Trying to access array offset on value of type null [array (
'trace' => '
#0: Elementor\Core\Logger\Manager -> shutdown()
',
)]
PHP: 2023-06-01 08:40:13 [warning X 3][/ebs2/vhosts/datatelcom.com/datatelcom.com/wp-content/plugins/elementor/app/modules/import-export/module.php::717] Attempt to read property "label" on null [array (
'trace' => '
#0: Elementor\Core\Logger\Manager -> shutdown()
',
)]
PHP: 2023-06-01 08:40:16 [warning X 3][/ebs2/vhosts/datatelcom.com/datatelcom.com/wp-content/plugins/elementor/core/common/modules/ajax/module.php::175] Undefined array key "data" [array (
'trace' => '
#0: Elementor\Core\Logger\Manager -> shutdown()
',
)]
JS: showing 5 of 5JS: 2023-05-15 17:43:38 [error X 1][<em><u>hidden link</u></em> line 2 > Function:23:9] settings.bg_image is null
JS: 2023-05-19 20:24:11 [error X 1][<em><u>hidden link</u></em>; elementor.documents.getCurrent() is null
JS: 2023-05-23 13:27:30 [error X 1][<em><u>hidden link</u></em>; C is undefined
JS: 2023-05-23 13:28:16 [error X 1][<em><u>hidden link</u></em>; this.view.container is undefined
JS: 2023-05-29 19:38:43 [error X 4][<em><u>hidden link</u></em>; this.store.find(...) is undefined
== Elementor - Compatibility Tag ==
Elementor Pro: Compatible
JetBlocks For Elementor: Incompatible
JetElements For Elementor: Incompatible
JetTabs For Elementor: Incompatible
Polylang Connect for Elementor: Incompatible
== Elementor Pro - Compatibility Tag ==
JetBlocks For Elementor: Incompatible
JetElements For Elementor: Incompatible
JetTabs For Elementor: Incompatible
Polylang Connect for Elementor: Incompatible
3rd attempt at migrating. been running for over 3hrs now. Still bloked at
Migration started, please don't close this window...
Moving your language settings...
Language settings has been migrated
Setting languages for posts...
Once you have added those lines to your wp-config.php file, please try and replicate the issue. Then go to your installation's wp-content folder and find the "debug.log" file that should've appeared by now (it will appear if it encounters an error in your server).
Then, upload that file into a storage platform of your choosing (Google Drive, Dropbox, etc) and send me the link (make sure it's set as "public" otherwise i won't be able to access its content) so we can download it and take a look at it, and determine where to go from there.
Checking the debug log, I see there is a fatal error that might cause the issue when migrating data on your site
[08-Jun-2023 12:44:56 UTC] PHP Fatal error: Uncaught Error: Call to undefined function pll_home_url() in /ebs2/vhosts/datatelcom.com/datatelcom.com/wp-content/themes/hello-theme-child-master/functions.php:33
It relates to the child theme, please switch to the main theme or a WordPress standard theme and do migration again to see if it helps.
I had noticed that line in the debug log and switched to the Hello Theme. Same exact problem. I just tried with the Twenty twenty-three theme and again, same thing.
Only difference (with both the Hello and WP theme) is, this time it is the following fatal error
[09-Jun-2023 12:27:56 UTC] PHP Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /ebs2/vhosts/datatelcom.com/datatelcom.com/wp-content/plugins/migrate-polylang-to-wpml-0.4/classes/class-mpw_migrate_posts.php:89
Stack trace:
#0 /ebs2/vhosts/datatelcom.com/datatelcom.com/wp-content/plugins/migrate-polylang-to-wpml-0.4/classes/class-mpw_migrate_posts.php(24): mpw_migrate_posts->set_original_post_language_details()
#1 /ebs2/vhosts/datatelcom.com/datatelcom.com/wp-content/plugins/migrate-polylang-to-wpml-0.4/migrate-polylang-to-wpml.php(295): mpw_migrate_posts->migrate_posts()
#2 /ebs2/vhosts/datatelcom.com/datatelcom.com/wp-includes/class-wp-hook.php(308): Migrate_Polylang_To_WPML->ajax_migrate_posts()
#3 /ebs2/vhosts/datatelcom.com/datatelcom.com/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#4 /ebs2/vhosts/datatelcom.com/datatelcom.com/wp-includes/plugin.php(517): WP_Hook->do_action()
#5 /ebs2/vhosts/datatelcom.com/datatelcom.com/wp-admin/admin-ajax.php(188): do_action()
#6 {main}
thrown in /ebs2/vhosts/datatelcom.com/datatelcom.com/wp-content/plugins/migrate-polylang-to-wpml-0.4/classes/class-mpw_migrate_posts.php on line 89
You can find the latest debug log at hidden link
Hope you can figure out what the problem is as I'd really like to be able to migrate everything over to WPML so I can take advantage of it's compatibility with JetEngine and Rank Math Pro.
For now, I will be restoring from my backup in order to be able to keep on migrating my pages to the new Elementor container format.
Just a thought here , although I'm guessing it just might be easier said than done but...
Since everything on my site has already been translated using Polylang, if there was a way, to install WPML and link everything together (including all media files) similar to what Polylang does (i.e.: by clicking the + sign and keying in the corresponding name of the page, post, media titkle, etc...) instead of going through the Migration plugin, that would make things a lot easier.
As far as the string translations, at the moment, I only have 3 pages, of which, only about 10% need to be translated since the rest are all WP and Rank Math variables. I can do that myself quickly enough.
Like I said, it's just a thought but, if it can be done 😉
I understand the issue, it happens when migrating data from Polylang to WPML with PHP 8.0 or later. Please follow the workaround below to fix this issue and let me know how it goes.
- Edit the file: /wp-content/plugins/migrate-polylang-to-wpml-0.4/classes/class-mpw_migrate_posts.php in your WordPress directory.
Well migration has completed BUT, when going to the French portion of my site (ex: hidden link), I get a critical error. FYI, I added the 301 redirect WPML suggested to my .htaccess file.
Also, when I go into the WP media section, no translations appear. HOWEVER, when I go to WPML/Media translation, they are all there. Problem is, some images show up in the primary language when they should be in the secondary (i.e.: some have French graphical text and under Polylang had no translations assigned to them and vice versa for some English images). Is there a way to change that or those can simply be ignored?
If you'd like to see for yourself, give me an email address at which I can send you a temporary login with administrator link.
I'll be going through everything and use your tutorial videos but, as far as I can tell, a substential mount of work needs to me done here to get my site back to the way it was when using Polylang.
FYI, removed RedirectMatch 301 /en/$ hidden link from .htaccess file as it was giving me a 502 error (bad gateway) when updating my pages, posts and custom posts. Can now update but, site still not working as it did before with Polylang installed
Redid migration from scratch, edited class-mpw_migrate_posts.php and changed lines as suggested, edited .htaccess file and re-inserted line RedirectMatch 301 /en/$ hidden link and, "pretty much" everything "appears" to be working at 95% now.
What I find strange right now is from one page to the other, the language switches varies. on some pages, it displays only the secondary language and on others it displays both languages?!?!
Ex: hidden link [display both languages]
WHEREAS hidden link [only displays the secondary languages]
From what I can tell so far, this only happens on the primary language pages
I see that issue on your site. I would like to request temporary access (wp-admin and FTP) to your site to take a better look at the issue. Your next reply is set to private to share the info.
❌ IMPORTANT: Please backup your database and website before proceeding ❌
You can use this plugin to create the backup: https://wordpress.org/plugins/duplicator/
✙ I would need your permission to de-activate and re-activate Plugins and the Theme and to change configurations on the site if needed. This is also a reason the backup is critical.
After I login to your site and check the issue again, I do not see both languages in the switcher. So I think it is a caching issue. I try to clear caches: browser, WP Fastest Cache plugin and now, the language switcher works correctly on the frontend. Please check this screenshot hidden link
Glad to hear it works on your end. If you see the main issue of this ticket with migration from Polylang to WPML is resolved, please mark it as Resolved.
