WP fatal error after activation of the plugin

[Fab]

PHP: 7.4
Wordpress: 5.9.2 (Installation by download via FileZilla (not by tool provided by the hosting provider))
Oceanica theme: 2.0.4
Oceanica Child theme: 1.0.0
Oceanica Engine: 0.0.1
Hotel Booking: 3.9.10
One Click Demo Import: 3.0.2 (Disabled after import)
Hotel Booking PDF Invoices: 1.2.1
Hotel Booking Notifier: 1.1.2

Others:
Getwid: 1.7.8
Jetpack: 10.7
Shortcode Widget: 1.5.3

Hi,

I had no problem to install Oceanica theme, Hotel Booking and Hotel Booking PDF Invoices plugins but after activation of Hotel Booking Notifier plugin, I obtain the error:
“There has been a critical error on this website.
Learn more about troubleshooting WordPress.”

The logs are below.

Thank you in advance for any help to solve this problem.

Fab

—
[12-Mar-2022 11:02:13 UTC] PHP Warning: require(/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php): failed to open stream: No such file or directory in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:13 UTC] PHP Fatal error: require(): Failed opening required ‘/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php’ (include_path=’.:/opt/alt/php74/usr/share/pear’) in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:13 UTC] PHP Notice: is_embed est appelée de la mauvaise manière. Les balises de requête conditionnelle ne fonctionnent pas avant le lancement de la requête. Avant cela, elles renvoient toujours le booléen false. Veuillez lire Débogage dans WordPress (en) pour plus d’informations. (Ce message a été ajouté à la version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:13 UTC] PHP Notice: is_search est appelée de la mauvaise manière. Les balises de requête conditionnelle ne fonctionnent pas avant le lancement de la requête. Avant cela, elles renvoient toujours le booléen false. Veuillez lire Débogage dans WordPress (en) pour plus d’informations. (Ce message a été ajouté à la version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:13 UTC] PHP Warning: Cannot modify header information – headers already sent by (output started at /wp-includes/functions.php:5212) in /wp-content/plugins/motopress-hotel-booking/includes/libraries/wp-session-manager/class-wp-session.php on line 127
[12-Mar-2022 11:02:23 UTC] PHP Warning: require(/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php): failed to open stream: No such file or directory in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:23 UTC] PHP Fatal error: require(): Failed opening required ‘/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php’ (include_path=’.:/opt/alt/php74/usr/share/pear’) in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:23 UTC] PHP Notice: is_embed was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:23 UTC] PHP Notice: is_search was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:23 UTC] PHP Warning: Cannot modify header information – headers already sent by (output started at /wp-includes/functions.php:5212) in /wp-content/plugins/motopress-hotel-booking/includes/libraries/wp-session-manager/class-wp-session.php on line 127
[12-Mar-2022 11:02:23 UTC] PHP Warning: require(/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php): failed to open stream: No such file or directory in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:23 UTC] PHP Fatal error: require(): Failed opening required ‘/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php’ (include_path=’.:/opt/alt/php74/usr/share/pear’) in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:23 UTC] PHP Notice: is_embed was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:23 UTC] PHP Notice: is_search was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:23 UTC] PHP Warning: Cannot modify header information – headers already sent by (output started at /wp-includes/functions.php:5212) in /wp-content/plugins/motopress-hotel-booking/includes/libraries/wp-session-manager/class-wp-session.php on line 127
[12-Mar-2022 11:02:43 UTC] PHP Warning: require(/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php): failed to open stream: No such file or directory in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:43 UTC] PHP Fatal error: require(): Failed opening required ‘/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php’ (include_path=’.:/opt/alt/php74/usr/share/pear’) in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:43 UTC] PHP Notice: is_embed was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:43 UTC] PHP Notice: is_search was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:43 UTC] PHP Warning: Cannot modify header information – headers already sent by (output started at /wp-includes/functions.php:5212) in /wp-content/plugins/motopress-hotel-booking/includes/libraries/wp-session-manager/class-wp-session.php on line 127
[12-Mar-2022 11:02:43 UTC] PHP Warning: require(/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php): failed to open stream: No such file or directory in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:43 UTC] PHP Fatal error: require(): Failed opening required ‘/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php’ (include_path=’.:/opt/alt/php74/usr/share/pear’) in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:43 UTC] PHP Notice: is_embed was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:43 UTC] PHP Notice: is_search was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:43 UTC] PHP Warning: Cannot modify header information – headers already sent by (output started at /wp-includes/functions.php:5212) in /wp-content/plugins/motopress-hotel-booking/includes/libraries/wp-session-manager/class-wp-session.php on line 127
[12-Mar-2022 11:02:43 UTC] PHP Warning: require(/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php): failed to open stream: No such file or directory in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:43 UTC] PHP Fatal error: require(): Failed opening required ‘/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php’ (include_path=’.:/opt/alt/php74/usr/share/pear’) in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:43 UTC] PHP Notice: is_embed was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:43 UTC] PHP Notice: is_search was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:43 UTC] PHP Warning: Cannot modify header information – headers already sent by (output started at /wp-includes/functions.php:5212) in /wp-content/plugins/motopress-hotel-booking/includes/libraries/wp-session-manager/class-wp-session.php on line 127
[12-Mar-2022 11:02:43 UTC] PHP Warning: require(/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php): failed to open stream: No such file or directory in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:43 UTC] PHP Fatal error: require(): Failed opening required ‘/wp-content/plugins/mphb-notifier/classes/users-and-roles/wp_roles.php’ (include_path=’.:/opt/alt/php74/usr/share/pear’) in /wp-content/plugins/mphb-notifier/includes/autoloader.php on line 31
[12-Mar-2022 11:02:43 UTC] PHP Notice: is_embed was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:43 UTC] PHP Notice: is_search was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5768
[12-Mar-2022 11:02:43 UTC] PHP Warning: Cannot modify header information – headers already sent by (output started at /wp-includes/functions.php:5212) in /wp-content/plugins/motopress-hotel-booking/includes/libraries/wp-session-manager/class-wp-session.php on line 127

[Valeriia Bavykina]

Hello!

You uses the Hotel Booking Notifier plugin version 1.1.2 with added new user access capability settings. It means the Notifier plugin is specially optimized for the user roles feature available with the Hotel booking plugin update. Consequently you should update your Hotel booking plugin to the 4.0.0 version or greater. If you do not have time to wait for the theme update to get the latest Hotel Booking version, you can purchase Hotel Booking license, deactivate the inbuilt booking plugin on the website and install and activate Hotel Booking purchased separately (all the data will remain intact). This way you will get plugin updates independently from the theme package and use the user role feature along with other features, for example REST API.

[Fab]

Hi Valerie,

Thank you very much for your reply.

I confirm you that the problem is fixed with the latest version of the Hotel Booking plugin (4.2.1).

After Notifier plugin, I was able to install the other plugins (request payment and reviews) that generated a similar error with the former version of Hotel Booking plugin.

I haven’t noticed any conflict between the last installed plugins and the Oceanica theme.

Thank you again.

Fab

[Valeriia Bavykina]

Great news,Fab! You are welcome!
If there’s anything else I can help you with, please let me know.

[Author]

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