Compilation Failed

[20-Apr-2023 16:17:01 UTC] PHP Warning:  preg_match_all(): Compilation failed: quantifier does not follow a repeatable item at offset 7 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 16:17:01 UTC] PHP Warning:  preg_match_all(): Compilation failed: quantifier does not follow a repeatable item at offset 7 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 16:17:02 UTC] PHP Warning:  preg_match_all(): Compilation failed: quantifier does not follow a repeatable item at offset 7 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 16:17:02 UTC] PHP Warning:  preg_match_all(): Compilation failed: quantifier does not follow a repeatable item at offset 7 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 16:34:04 UTC] PHP Warning:  preg_match_all(): Compilation failed: quantifier does not follow a repeatable item at offset 16 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 16:34:04 UTC] PHP Warning:  preg_match_all(): Compilation failed: quantifier does not follow a repeatable item at offset 16 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 16:34:04 UTC] PHP Warning:  preg_match_all(): Compilation failed: quantifier does not follow a repeatable item at offset 16 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 16:34:04 UTC] PHP Warning:  preg_match_all(): Compilation failed: quantifier does not follow a repeatable item at offset 16 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 17:04:37 UTC] PHP Warning:  preg_match_all(): Compilation failed: missing closing parenthesis at offset 24 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 17:04:37 UTC] PHP Warning:  preg_match_all(): Compilation failed: missing closing parenthesis at offset 24 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 17:04:37 UTC] PHP Warning:  preg_match_all(): Compilation failed: missing closing parenthesis at offset 24 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 17:04:37 UTC] PHP Warning:  preg_match_all(): Compilation failed: missing closing parenthesis at offset 24 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 17:52:15 UTC] PHP Warning:  preg_match_all(): Compilation failed: missing closing parenthesis at offset 28 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 17:52:15 UTC] PHP Warning:  preg_match_all(): Compilation failed: missing closing parenthesis at offset 28 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 17:52:15 UTC] PHP Warning:  preg_match_all(): Compilation failed: missing closing parenthesis at offset 28 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[20-Apr-2023 17:52:15 UTC] PHP Warning:  preg_match_all(): Compilation failed: missing closing parenthesis at offset 28 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545

Hello @wonderingthi,

Thank you for contacting the support and sorry for the inconvenience caused.

There might be a keyword you’ve added with the opening parenthesis which doesn’t contain a closing parenthesis. For example, a keyword Rank(Math is there instead of Rank(Math).

In order to fix this issue, you’ll need to add the closing parenthesis there. You may update the keyword from the post/page if you can remember something similar to this one.

If you’re clueless about where the affected keyword can be, a quick way to spot them would be to access your database and make a query on your wp_postmeta table for the meta key rank_math_focus_keyword and in the values, you should filter the ones which include an opening parenthesis.

Let us know how it goes. Looking forward to helping you.

I did what you asked and deleted keywords without closing parenthesis.

I’m still getting a lot of this warning though:

[21-Apr-2023 16:52:54 UTC] PHP Warning: preg_match_all(): Compilation failed: quantifier does not follow a repeatable item at offset 7 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[21-Apr-2023 16:52:54 UTC] PHP Warning: preg_match_all(): Compilation failed: quantifier does not follow a repeatable item at offset 7 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[21-Apr-2023 17:57:43 UTC] PHP Warning: preg_match_all(): Compilation failed: quantifier does not follow a repeatable item at offset 6 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545
[21-Apr-2023 17:57:43 UTC] PHP Warning: preg_match_all(): Compilation failed: quantifier does not follow a repeatable item at offset 6 in /home/nialdzc/public_html/wp-content/plugins/seo-by-rank-math/includes/replace-variables/class-post-variables.php on line 545

Hello @wonderingthi,

Can you please check other special characters in your focus keyword like *, +, or [ ]?

Usually, these types of characters also tend to cause warnings.

If the issue persists, please ensure that you are using the latest version of Rank Math plugin. If not yet, please do update them. You may refer to our changelog page here: https://rankmath.com/changelog/

Looking forward to helping you.