PHP deprecated notice

[shabnam611]

• [x] I've read and understood the contribution guidelines.
• [x] I've searched for any related issues and avoided creating a duplicate issue.

Please give us a description of what happened

To Reproduce

Step-by-step reproduction instructions

1. When using PHP 8.1 with Yoast SEO 22.9, the debug log shows PHP Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /wp-content/plugins/wordpress-seo/src/presenters/canonical-presenter.php on line 49

Screenshots, screen recording, code snippet

If possible, please provide a screenshot, a screen recording or a code snippet which demonstrates the bug.

Technical info

• If relevant, which editor is affected (or editors):
• [ ] Block Editor
• [ ] Gutenberg Editor
• [ ] Elementor Editor
• [ ] Classic Editor
• [ ] Other:

• Which browser is affected (or browsers):
• [x] Chrome
• [ ] Firefox
• [ ] Safari
• [ ] Other:

Used versions

• Device you are using:
• Operating system:
• PHP version: 8.1.28
• WordPress version: 6.5.4
• WordPress Theme: Hello Elementor
• Yoast SEO version: 22.9
• Gutenberg plugin version:
• Elementor plugin version:
• Classic Editor plugin version:
• Relevant plugins in case of a bug:

[shabnam611]

Please inform the customer of conversation # 1148586 when this conversation has been closed.

[y-noel-baguio]

Please include this customer of conversation # 1174638 when this conversation has been closed.

[janwinmadrona]

Please inform the customer of conversation # 1185511 when this conversation has been closed.