PHP Notice, please fix

Hello,

On one of our wordpress installs, there is a PHP notice showing up in one of our author pages.

Notice: Undefined offset: 0 in /www/wp-includes/class-wp-query.php on line 3252.

Here is the output from Query Monitor:

wp-includes/class-wp-query.php:3252
WP_Query->next_post()
wp-includes/class-wp-query.php:3281
WP_Query->the_post()
wp-includes/query.php:937
the_post()
wp-content/themes/generatepress/inc/structure/archives.php:75
generate_filter_the_archive_title()
wp-includes/class-wp-hook.php:288
apply_filters('get_the_archive_title')
wp-includes/general-template.php:1618
get_the_archive_title()
wp-content/plugins/wp-seopress/inc/functions/variables/dynamic-variables.php:231
seopress_dyn_variables_init()
wp-includes/class-wp-hook.php:288
apply_filters('seopress_dyn_variables_fn')
wp-content/plugins/wp-seopress/inc/functions/options-titles-metas.php:245
seopress_titles_the_title()
wp-includes/class-wp-hook.php:288
apply_filters('pre_get_document_title')
wp-includes/general-template.php:1040
wp_get_document_title()
wp-includes/general-template.php:1159
_wp_render_title_tag()
wp-includes/class-wp-hook.php:288
do_action('wp_head')
wp-includes/general-template.php:2879
wp_head()
wp-content/themes/generatepress_child/header.php:18
load_template('wp-content/themes/generatepress_child/header.php')
wp-includes/template.php:671
locate_template()
wp-includes/general-template.php:41
get_header()
wp-content/themes/generatepress_child/author.php:24

I think you need to add a check on your code, to check if what you are looking for exists before trying to use it.

Kind regards,

Raul Peixoto