Title: Various widget & block related PHP errors
Last modified: August 20, 2021
---
# Various widget & block related PHP errors
* [Antipole](https://wordpress.org/support/users/antipole/)
* (@antipole)
* [4 years, 9 months ago](https://wordpress.org/support/topic/various-widget-block-related-php-errors/)
* I have updated to WP 5.8 and am using PHP 7.4 and am seeing various PHP warnings&
errors relating to blocks and widgets.
* I have already changed the definition of ABSPATH in my wp-config.php file from:
`
define('ABSPATH', dirname(__FILE__) . '/');` to `define('ABSPATH', __DIR__ . '/');`
* I am aware that WP 5.8 introduced new widget blocks but I have not started using
that feature. I am assuming I do not have to install the classic widgets plugin
for existing pages to continue working?
* Below is a summary of the errors being logged. Any help will be much appreciated.
* ```
(E1) Fatal error: Uncaught Error: Class 'WP_Widget' not found in /home/xxx...xxx/wp-includes/widgets/class-wp-widget-block.php:17
(E2) Fatal error: require(): Failed opening required 'ABSPATHWPINC/blocks/archives.php' (include_path='.:/opt/cpanel/ea-php74/root/usr/share/pear') in /home/xxx...xxx/wp-includes/blocks/index.php on line 9
(E3) Fatal error: Uncaught Error: Call to undefined function get_the_block_template_html() in /home/xxx...xxx/wp-includes/template-canvas.php:12
```
* I am also seeing warnings that might give a clue
* ```
(W1) Warning: require(ABSPATHWPINC/blocks/archives.php): failed to open stream: No such file or directory in /home/xxx...xxx/wp-includes/blocks/index.php on line 9
(W2) Warning: Use of undefined constant WPINC - assumed 'WPINC' (this will throw an Error in a future version of PHP) in /home/xxx...xxx/wp-includes/blocks/index.php on line 9
(W3) Warning: Use of undefined constant ABSPATH - assumed 'ABSPATH' (this will throw an Error in a future version of PHP) in /home/antipole/public_html/ovni-owners/wp-includes/blocks/index.php on line 9
```
* The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fvarious-widget-block-related-php-errors%2F%3Foutput_format%3Dmd&locale=en_US)
to see the link]_
Viewing 8 replies - 1 through 8 (of 8 total)
* [Topher](https://wordpress.org/support/users/topher1kenobe/)
* (@topher1kenobe)
* [4 years, 9 months ago](https://wordpress.org/support/topic/various-widget-block-related-php-errors/#post-14789661)
* I also had issues with 5.8 because the new widgets manager was causing problems.
I went ahead and installed the classic widgets plugin and it fixed everything.
I’d give that a go.
* Thread Starter [Antipole](https://wordpress.org/support/users/antipole/)
* (@antipole)
* [4 years, 9 months ago](https://wordpress.org/support/topic/various-widget-block-related-php-errors/#post-14806842)
* Installed the classic widgets plugin and it may have helped a bit but I am still
seeing errors and warnings above.
* [TKServer](https://wordpress.org/support/users/tkserver/)
* (@tkserver)
* [4 years, 8 months ago](https://wordpress.org/support/topic/various-widget-block-related-php-errors/#post-14917584)
* Same here. I have classic widgets plugin installed but have:
* `PHP Fatal error: Uncaught Error: Class 'WP_Widget' not found`
`PHP Fatal error:
require(): Failed opening required 'ABSPATHWPINC/blocks/archives.php'` `PHP Fatal
error: Uncaught Error: Call to undefined function get_the_block_template_html()`
- This reply was modified 4 years, 8 months ago by [TKServer](https://wordpress.org/support/users/tkserver/).
* [Jason M](https://wordpress.org/support/users/ep0ch/)
* (@ep0ch)
* [4 years, 4 months ago](https://wordpress.org/support/topic/various-widget-block-related-php-errors/#post-15218747)
* Using php 7.4 (not sure if that’s relative) but my 30+ WordPress sites all have
errors like this:
* ```
[04-Jan-2022 15:45:11 UTC] PHP Warning: Use of undefined constant ABSPATH - assumed 'ABSPATH' (this will throw an Error in a future version of PHP) in /wp-includes/blocks/index.php on line 9
[04-Jan-2022 15:45:11 UTC] PHP Warning: Use of undefined constant WPINC - assumed 'WPINC' (this will throw an Error in a future version of PHP) in /wp-includes/blocks/index.php on line 9
[04-Jan-2022 15:45:11 UTC] PHP Warning: require(ABSPATHWPINC/blocks/archives.php): failed to open stream: No such file or directory in /wp-includes/blocks/index.php on line 9
[04-Jan-2022 15:45:11 UTC] PHP Fatal error: require(): Failed opening required 'ABSPATHWPINC/blocks/archives.php' (include_path='.:/opt/cpanel/ea-php74/root/usr/share/pear') in /wp-includes/blocks/index.php on line 9
```
* [janehrhardt](https://wordpress.org/support/users/janehrhardt/)
* (@janehrhardt)
* [4 years, 4 months ago](https://wordpress.org/support/topic/various-widget-block-related-php-errors/#post-15280230)
* Is it stopping the normal operations of your website?
* `(E3) Fatal error: Uncaught Error: Call to undefined function get_the_block_template_html()
in /home/xxx...xxx/wp-includes/template-canvas.php:12`
* This error is probably caused by a direct call to [https://example.com/wp-includes/template-canvas.php](https://example.com/wp-includes/template-canvas.php)
* Nothing to be worried about, but it would be nice if WordPress prevented direct
calls like that.
* [mrkawaii](https://wordpress.org/support/users/mrkawaii/)
* (@mrkawaii)
* [4 years, 4 months ago](https://wordpress.org/support/topic/various-widget-block-related-php-errors/#post-15298279)
* Hello,
* I am also getting the same php errors and warnings on my site. Is there a fix
for this problem? Thanks
* [wiredafrican](https://wordpress.org/support/users/wiredafrican/)
* (@wiredafrican)
* [4 years, 1 month ago](https://wordpress.org/support/topic/various-widget-block-related-php-errors/#post-15569734)
* We still getting these errors on many sites. Is there no solution yet?
* [liviagomes](https://wordpress.org/support/users/liviagomes/)
* (@liviagomes)
* [3 years, 12 months ago](https://wordpress.org/support/topic/various-widget-block-related-php-errors/#post-15702329)
* I getting the same error on version 6.0.
* Sometimes my clients’ orders appear with the date 01/Jan/1970, I can’t understand
why this happens, e.g. in a total of more than 100 orders one or another fails.
* So I updated the Woocommerce database to try to fix this and I also got these
errors:
* ```
Notice: Undefined index: HTTP_HOST in /home/DOMAIN/public_html/wp-content/plugins/NAME_PLUGIN/FILENAME on line 21
Notice: Undefined index: HTTP_HOST in /home/DOMAIN/public_html/wp-content/plugins/NAME_PLUGIN/FILENAME on line 25
Warning: Declaration of WCS_Query::get_endpoint_title($endpoint) should be compatible with WC_Query::get_endpoint_title($endpoint, $action = '') in /home/DOMAIN/public_html/wp-content/plugins/NAME_PLUGIN/woocommerce-subscriptions/includes/class-wcs-query.php on line 377
Notice: Function register_rest_route was called incorrectly. The REST API route definition for wc/v1/subscriptions/statuses is missing the required permission_callback argument. For REST API routes that are intended to be public, use __return_true as the permission callback. Please see Debugging in WordPress for more information. (This message was added in version 5.5.0.) /home/DOMAIN/public_html/wp-includes/functions.php 5831
Found 2 updates (wc_update_600_migrate_rate_limit_options, wc_update_600_db_version)
Updating database 100% [==================================================================================================================================================================] 0:00 / 0:00
```
* Someone knows about this errors?
* Thanks a lot!
Viewing 8 replies - 1 through 8 (of 8 total)
The topic ‘Various widget & block related PHP errors’ is closed to new replies.
* In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
* 8 replies
* 8 participants
* Last reply from: [liviagomes](https://wordpress.org/support/users/liviagomes/)
* Last activity: [3 years, 12 months ago](https://wordpress.org/support/topic/various-widget-block-related-php-errors/#post-15702329)
* Status: not resolved
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