Hi,
I browsed through your forum to find out if there was a solution to my problem but didn’t find any suitable answer.

My website for the forum-section is : http://cdf-lardy.fr/forums which results in a blank screen. In the back-office, i can simply create new forums but cannot access the “forums” or “All forums”-view, giving the same blank screen.

Version :
WP : 4.7.4
bbPress : 2.5.2
PHP version is 7.1

All other plugins are updated, i tried to disable them all, no changes.

I enabled debug function and got following message :

Fatal error: Uncaught Error: [] operator not supported for strings in /customers/4/9/2/cdf-lardy.fr/httpd.www/wp-content/plugins/bbpress/includes/forums/functions.php:1800 Stack trace: #0 /customers/4/9/2/cdf-lardy.fr/httpd.www/wp-includes/class-wp-hook.php(298): bbp_pre_get_posts_normalize_forum_visibility(Object(WP_Query)) #1 /customers/4/9/2/cdf-lardy.fr/httpd.www/wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters(”, Array) #2 /customers/4/9/2/cdf-lardy.fr/httpd.www/wp-includes/plugin.php(515): WP_Hook->do_action(Array) #3 /customers/4/9/2/cdf-lardy.fr/httpd.www/wp-includes/class-wp-query.php(1681): do_action_ref_array(‘pre_get_posts’, Array) #4 /customers/4/9/2/cdf-lardy.fr/httpd.www/wp-includes/class-wp-query.php(3238): WP_Query->get_posts() #5 /customers/4/9/2/cdf-lardy.fr/httpd.www/wp-includes/class-wp.php(617): WP_Query->query(Array) #6 /customers/4/9/2/cdf-lardy.fr/httpd.www/wp-includes/class-wp.php(735): WP->query_posts() #7 /customers/4/9/2/cdf-lardy.fr/httpd.www/wp-includes/functions.php(955): WP->mai in /customers/4/9/2/cdf-lardy.fr/httpd.www/wp-content/plugins/bbpress/includes/forums/functions.php on line 1800

Does anyone have a clue ?

Many thanks in advance
Edeezine

[@ewiedenhoff Participant 7 years, 7 months ago]

Oh, I forgot, I use a theme called “Sydney”, i tried to disable it switching to TwentySeventeen, -sixteen, -fifteen…..problem remains the same, error-message as well.

[@robin-w Moderator 7 years, 7 months ago]

seems php 7.1 has issues with a lot of plugins, 2 mentioned here

https://wordpress.org/support/topic/php-7-0-14-to-7-1-1-operator-not-supported-for-strings/

and a bbpress trac ticket

https://bbpress.trac.wordpress.org/ticket/2987

I’m running php 7.0.17 with no issues

[@robin-w Moderator 7 years, 7 months ago]

oh, and I presume you mean you are running bbpress 2.5.12 not 2.5.2

[@robin-w Moderator 7 years, 7 months ago]

seems like that will be fixed in bbpress 2.6

so 3 fixes

1. downgrade to a lesser version of php
2. upgrade to bbpress 2.6beta-2
3. in bbpress 2.5.12 change line 1851 from

$meta_query   = $posts_query->get( 'meta_query' );

to

$meta_query = $posts_query->get( 'meta_query', array() );

Since the next upgrade will fix that anyway, no issue in changing the bbpress file

best I can offer I’m afraid

[@ewiedenhoff Participant 7 years, 7 months ago]

Many thanks Robin W for your numerous hints & solutions, reverted to PHP version 7.0 and it works like a charm.

Thanks again,
Regards,

[@robin-w Moderator 7 years, 7 months ago]

Great – glad you’re fixed