Jos Klever
Managing updates and security of WordPress sites at Jos Klever Web Support
@josklever Werkhoven, the Netherlands joined Feb 2011
Languages
nl_NL
Badges
CODE
1 badge
Core Contributor
'22
PRACTICE
1 badge
Support Contributor
'26
POLYGLOTS
1 badge
Translation Contributor
'15
Current Job
Managing updates and security of WordPress sites
Present
Jos Klever Web Support
Recent impact
Score weights high-impact work (commits, releases, approved translations, props) at 3x routine activity.
Last 30 days
1contribution
high0
medium1
score1
Last 90 days
6contributions
high0
medium6
score6
Last 12 months
56contributions
high3
medium53
score62
WordPress releases
Contributed to 4 releases
- 6.7
- 6.6
- 6.3
- 5.9
Contributions
Type
September 2026
Sep 12
Sat · 19:39
Forums
med
Posted a reply to Fatal error: undefined function pt_unserialize_to_array(), on the site WordPress.org Forums:
@bramdehaan Yes!
@bramdehaan Yes!
Sep 04
Fri · 19:31
Forums
med
Posted a reply to Fatal error: undefined function pt_unserialize_to_array(), on the site WordPress.org Forums:
This site is also using Mollie Payments for WooCommerce 8.1.9 and I think that this…
This site is also using Mollie Payments for WooCommerce 8.1.9 and I think that this…
Sep 04
Fri · 18:45
Forums
med
Created a topic, Fatal error: undefined function pt_unserialize_to_array(), on the site WordPress.org Forums:
With version 5.0.4 I get a fatal error: PHP Fatal e…
With version 5.0.4 I get a fatal error: PHP Fatal e…
August 2026
Aug 24
Mon · 08:11
Forums
med
Posted a reply to Wordfence IPs blocked by host because of AbuseIPDB reports, on the site WordPress.org Forums:
@wfpeter Any update on this issue? It's been almost 2 weeks without any comment.
@wfpeter Any update on this issue? It's been almost 2 weeks without any comment.
Aug 12
Wed · 12:54
Forums
med
Created a topic, Uncaught ReferenceError: progress is not defined, on the site WordPress.org Forums:
As soon as the option "VAT Exemption" -> "Remove VA…
As soon as the option "VAT Exemption" -> "Remove VA…
Aug 11
Tue · 07:38
Forums
med
Created a topic, Wordfence IPs blocked by host because of AbuseIPDB reports, on the site WordPress.org Forums:
The host of one of my clients is blocking your Wordfen…
The host of one of my clients is blocking your Wordfen…
July 2026
Jul 04
Sat · 09:22
Forums
med
Posted a reply to Vulnerability found in version <=2.2.7, on the site WordPress.org Forums:
Thanks, I've installed the update.
Thanks, I've installed the update.
Jul 03
Fri · 21:20
Forums
med
Posted a reply to Vulnerability found in version <=2.2.7, on the site WordPress.org Forums:
@henryp Thanks! You can email plugins@wordpress.org to tell that this is a security update and…
@henryp Thanks! You can email plugins@wordpress.org to tell that this is a security update and…
Jul 02
Thu · 14:59
Forums
med
Posted a reply to Fatal error after update to 1.0.29, on the site WordPress.org Forums:
Actually it appears this was enough: Deactivating the plugin by renaming it via FTP Reloading…
Actually it appears this was enough: Deactivating the plugin by renaming it via FTP Reloading…
Jul 02
Thu · 14:50
Forums
med
Created a topic, Fatal error after update to 1.0.29, on the site WordPress.org Forums:
PHP Fatal error: Uncaught Error: Call to undefined fu…
PHP Fatal error: Uncaught Error: Call to undefined fu…
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Plugins
22 favoritesTranslations
1 locale
nl_NL
Nederlands (Dutch)
Translation Contributor