Error php Traffic Shaper Wizards

[trixbox]

Hello,
My config : 2.4.4-RELEASE-p1 (amd64)
built on Mon Nov 26 11:40:26 EST 2018
FreeBSD 11.2-RELEASE-p4

when using Traffic Shaper Wizards i get php error :
Fatal error: Uncaught Error: Cannot use string offset as an array in /usr/local/www/shaper.inc:41 Stack trace: #0 /usr/local/www/shaper.inc(881): get_reference_to_me_in_config(Array) #1 /usr/local/www/wizards/traffic_shaper_wizard_multi_all.inc(754): altq_root_queue->wconfig() #2 /usr/local/www/wizards/traffic_shaper_wizard_multi_all.inc(695): apply_all_chosen_items() #3 /usr/local/www/wizard.php(114) : eval()'d code(1): step8_stepsubmitphpaction() #4 /usr/local/www/wizard.php(114): eval() #5 {main} thrown in /usr/local/www/shaper.inc on line 41 PHP ERROR: Type: 1, File: /usr/local/www/shaper.inc, Line: 41, Message: Uncaught Error: Cannot use string offset as an array in /usr/local/www/shaper.inc:41 Stack trace: #0 /usr/local/www/shaper.inc(881): get_reference_to_me_in_config(Array) #1 /usr/local/www/wizards/traffic_shaper_wizard_multi_all.inc(754): altq_root_queue->wconfig() #2 /usr/local/www/wizards/traffic_shaper_wizard_multi_all.inc(695): apply_all_chosen_items() #3 /usr/local/www/wizard.php(114) : eval()'d code(1): step8_stepsubmitphpaction() #4 /usr/local/www/wizard.php(114): eval() #5 {main} thrown
Thank you for your help

[jimp]

Can you elaborate on the exact settings you used to reach that point?