Fatal error: Uncaught TypeError: Unsupported operand types: string & int

This topic has 3 replies, 2 voices, and was last updated 12 months ago by AMX.

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April 4, 2024 at 7:45 PM #45137
AMX
Participant
Hi,

I am experiencing some issues with migrating one site from PHP 7.4 to PHP 8.1 / 8.2

I have fixed most issues, but going to Settings -> Permalinks causes a white screen. I have narrowed it down, and it happens when MB Custom Post Type (from MB AIO) is activated. I get this debug info:
```
Fatal error: Uncaught TypeError: Unsupported operand types: string & int in /home/xxxxx/public_html/wp-includes/class-wp-rewrite.php:1036 Stack trace: #0 /home/xxxxx/public_html/wp-includes/class-wp-rewrite.php(1410): WP_Rewrite->generate_rewrite_rules() #1 /home/xxxxx/public_html/wp-includes/class-wp-rewrite.php(1509): WP_Rewrite->rewrite_rules() #2 /home/xxxxx/public_html/wp-includes/class-wp-rewrite.php(1884): WP_Rewrite->refresh_rewrite_rules() #3 /home/xxxxx/public_html/wp-includes/rewrite.php(282): WP_Rewrite->flush_rules() #4 /home/xxxxx/public_html/wp-admin/options-permalink.php(212): flush_rewrite_rules() #5 {main} thrown in /home/xxxxx/public_html/wp-includes/class-wp-rewrite.php on line 1036

There has been a critical error on this website. Please check your site admin email inbox for instructions.
```
Everything works fine in PHP 7.4. But upgrading to 8.1 or 8.2 with MB Custom Post Type causes this error. I tested on Cloudways and in LocalWP.

Greetings,
Tom

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April 4, 2024 at 7:53 PM #45138

AMX
Participant

The site was migrated from Toolset to Meta Box some time ago, if that matters.

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April 4, 2024 at 10:19 PM #45145

Peter
Moderator

Hello,

According to the error message Fatal error: Uncaught TypeError: Unsupported operand types: string & int in /home/xxxxx/public_html/wp-includes/class-wp-rewrite.php:1036

this is the code in the file class-wp-rewrite.php line 1036
if ( EP_PAGES & $ep_mask || EP_PERMALINK & $ep_mask ) {

it relates to the post type setting ep_mask that is not supported by MB CPT. Please try to delete the current CPT and re-create it manually with the same slug and settings and check the issue again.

Following the documentation https://developer.wordpress.org/reference/functions/register_post_type/

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April 5, 2024 at 8:44 AM #45149

AMX
Participant

Thanks! It seems to working now.

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