PHP Fatal error – Uncaught Error: Call to a member function date() on null

I experience a similar problem. Did you find an answer?
Thx.
/Christian

according to my debug report the error is on line 738
in this file
/wp-content/plugins/woocommerce/src/Admin/API/Reports/Customers/DataStore.php on line 738

I have replaced this line
'date_registered' => $customer->get_date_created( 'edit' )->date( TimeInterval::$sql_datetime_format ),

with
$customer->get_date_created( 'edit' ) ? $customer->get_date_created( 'edit' )->date( TimeInterval::$sql_datetime_format ) : null,

and it now appears to work

I am having the same problem, the line 738 is edited as suggested and I am still getting the same error.
Can someone help please?

Hi @sacfc

Thanks for reaching out!

I’d like to understand your site properly, can you please share your System Status Report, that will help us further troubleshoot.

You can find it via WooCommerce > Status. Select Get system report and then Copy for support. Once you’ve done that, you can paste it into your reply here.

Hi @trepidationcouk

I’m glad you were able to find a solution and thanks for sharing it with the community too! ??

Hi @krelle @yorksett

I understand you are experiencing the same issue and since every site is different and you’re not the person who originally started this topic then, per the forum guidelines, would you please start your own topic?

We’ll be more than happy to help there ??

Sure, here it is

### WordPress Environment ###

WordPress address (URL): https://fanzone.stalbanscityfc.com
Site address (URL): https://fanzone.stalbanscityfc.com
WC Version: 7.1.0
REST API Version: ? 7.1.0
WC Blocks Version: ? 8.7.5
Action Scheduler Version: ? 3.5.2
Log Directory Writable: ?
WP Version: 6.1.1
WP Multisite: –
WP Memory Limit: 3 GB
WP Debug Mode: –
WP Cron: ?
Language: en_GB
External object cache: ?

### Server Environment ###

Server Info: LiteSpeed
PHP Version: 7.4.33
PHP Post Max Size: 256 MB
PHP Time Limit: 400
PHP Max Input Vars: 1000
cURL Version: 7.71.0
OpenSSL/1.1.1p

SUHOSIN Installed: –
MySQL Version: 5.7.40
Max Upload Size: 256 MB
Default Timezone is UTC: ?
fsockopen/cURL: ?
SoapClient: ? Your server does not have the SoapClient class enabled – some gateway plugins which use SOAP may not work as expected.
DOMDocument: ?
GZip: ?
Multibyte String: ?
Remote Post: ?
Remote Get: ?

### Database ###

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WC Database Prefix: kjs_
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weLaunch Framework: by weLaunch.io – 1.0.12
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Shop base: #98 – /shop/
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highlight-pro/woocommerce/checkout/thankyou.php
highlight-pro/woocommerce/loop/pagination.php
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Daily Cron: ? Next scheduled: 2022-11-22 06:29:00 +00:00
Options: ?
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Complete: 14,662
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Failed: 91
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### CoCart ###

Version: 3.7.9
Database Version: 3.7.9
Install Date: 22 December 2021
Carts in Session: 610
Carts Active: 610 out of 610 in session.
Carts Expiring Soon: 11 out of 610 in session.
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Carts Source (by CoCart): 0
Carts Source (by Web): 452
Carts Source (by Other): 158

### Status report information ###

Generated at: 2022-11-22 06:06:31 +00:00
`

Sorry just re-read my response. This is the code to replace the above code with:

date_registered' => $customer->get_date_created( 'edit' ) ? $customer->get_date_created( 'edit' )->date( TimeInterval::$sql_datetime_format ) : null,

Hi,

got the same error when trying to change a customers user role.
I haven′t tried changing the php-code since that would be only a temporary solution until the next update, wouldn′t it?
Is this something that will be fixed by WooCommerce in the near future?

Thanks ??

@trepidationcouk the ‘old’ line does not exist in DataStore.php file in my installation.
Any other ideas?

@yorksett you’ll need this line in your wordpress root wp-config.php file
define( 'WP_DEBUG', true );
and hopefully it’ll show you the line in that(or other file) which is causing the error.

Another solution is to wait for the next woocommerce update where hopefully they’ll fix it for everyone.

Otherwise all I’ve done is create a ternary i.e so the code has something to fall back on if it doesn’t have a value

We are also experiencing exactly the same error. Thanks @trepidationcouk for your temporary solution. It works nicely for now.

I have just been looking into this further and it would appear to be an oversight in WooCommerce coding based on the fact that earlier in the same DataStore.php file on line 573, they cater to the possibility of the registered date being null ie

$data['date_registered'] = $customer_user->get_date_created( 'edit' ) ? $customer_user->get_date_created( 'edit' )->date( TimeInterval::$sql_datetime_format ) : null;

And given that the default value for date_registered (in the wp_users table) is null, it makes sense that they need to cater for this. How do we make this something that gets fixed in the next WooCommerce update?

Thanks
Janette

• This reply was modified 2 years ago by jtowell.

Hi there, @jtowell ??

I have just been looking into this further and it would appear to be an oversight in WooCommerce coding based on the fact that earlier in the same DataStore.php file on line 573, they cater to the possibility of the registered date being null

Thank you for looking further into this! While trying to reproduce this, on a test installation of mine, I was unable to. WP_DEBUG was set to true.

And given that the default value for date_registered (in the wp_users table) is null, it makes sense that they need to cater for this. How do we make this something that gets fixed in the next WooCommerce update?

While investigating GitHub issues, I was not able to find one about it. Feel free to submit a new issue, using the green button over there.

Sorry for the late reply, we had a problem in our internal system recently.

Thank you. ??

cc @trepidationcouk

@woo-hc – perhaps it would make sense for you to open the WC GH ticket, as this might be beyond the tech range of most normal WP users?

In an attempt to get this fixed as quickly as possible I have now created a GitHub issue for this Github Issue #35752
This is my first time creating an issue on github so hopefully I have done it all correctly.

Interesting enough I can’t reproduce the error now. I could not get rid of Fatal error for several days and now its gone! It could have been settings on the server of who knows!
Thanks to everyone that tried to help me.