Fixed Errorlog: getMaxAllowedAttachmentsPerItem() on null

Hello,
i run a new installation of XenForo 2.2 an imegrated a vB-forum in XF.
Today ist my "roll out" with the Board.

One User uploaded an image to the Showcase, wich get me an error at the acp:

Code:

Error: Call to a member function getMaxAllowedAttachmentsPerItem() on null src/addons/XenAddons/Showcase/Attachment/Item.php:57

Code:

Stack-Trace
#0 src/XF/Repository/Attachment.php(21): XenAddons\Showcase\Attachment\Item->getConstraints(Array)
#1 src/addons/XenAddons/Showcase/Pub/Controller/Category.php(491): XF\Repository\Attachment->getEditorData('sc_item', Object(Siropu\KeywordLinking\XenAddons\Showcase\Entity\Item), '252ea63d09344fd...')
#2 src/XF/Mvc/Dispatcher.php(350): XenAddons\Showcase\Pub\Controller\Category->actionPreview(Object(XF\Mvc\ParameterBag))
#3 src/XF/Mvc/Dispatcher.php(257): XF\Mvc\Dispatcher->dispatchClass('XenAddons\\Showc...', 'Preview', Object(XF\Mvc\RouteMatch), Object(XenAddons\Showcase\Pub\Controller\Category), NULL)
#4 src/XF/Mvc/Dispatcher.php(113): XF\Mvc\Dispatcher->dispatchFromMatch(Object(XF\Mvc\RouteMatch), Object(XenAddons\Showcase\Pub\Controller\Category), NULL)
#5 src/XF/Mvc/Dispatcher.php(55): XF\Mvc\Dispatcher->dispatchLoop(Object(XF\Mvc\RouteMatch))
#6 src/XF/App.php(2300): XF\Mvc\Dispatcher->run()
#7 src/XF.php(488): XF\App->run()
#8 index.php(20): XF::runApp('XF\\Pub\\App')
#9 {main}

Code:

Status der Anfrage
array(4) {
  ["url"] => string(49) "/index.php?showcase/categories/zafira-b.3/preview"
  ["referrer"] => string(71) "http://www.zafira-forum.de/index.php?showcase/categories/zafira-b.3/add"
  ["_GET"] => array(1) {
    ["showcase/categories/zafira-b_3/preview"] => string(0) ""
  }
  ["_POST"] => array(17) {
    ["title"] => string(19) "Chianti´s Zafira B"
    ["description"] => string(41) "gekauft als Familien und Langstreckenauto"
    ["message_html"] => string(0) ""
    ["attachment_hash"] => string(32) "252ea63d09344fd5fd4f602dc7a5fef4"
    ["attachment_hash_combined"] => string(88) "{"type":"sc_item","context":{"category_id":3},"hash":"252ea63d09344fd5fd4f602dc7a5fef4"}"
    ["message_s2_html"] => string(13) "<p>A17DTR</p>"
    ["message_s3_html"] => string(0) ""
    ["message_s4_html"] => string(0) ""
    ["message_s5_html"] => string(86) "<p>Leichtmetallfelge 7,5J x 17 im 5-Breitspeichen-Design</p><p>mit Fulda 225/45R17</p>"
    ["cover_image_above_item"] => string(1) "1"
    ["comments_open"] => string(1) "1"
    ["ratings_open"] => string(1) "1"
    ["poll"] => array(5) {
      ["question"] => string(0) ""
      ["new_responses"] => array(1) {
        [0] => string(0) ""
      }
      ["max_votes_type"] => string(6) "single"
      ["change_vote"] => string(1) "1"
      ["view_results_unvoted"] => string(1) "1"
    }
    ["_xfToken"] => string(8) "********"
    ["_xfRequestUri"] => string(45) "/index.php?showcase/categories/zafira-b.3/add"
    ["_xfWithData"] => string(1) "1"
    ["_xfResponseType"] => string(4) "json"
  }
}

Some info about my server:

Code:

PHP-Version    7.3.26
MySQL-Version    10.3.27 (10.3.27-MariaDB-1:10.3.27+maria~stretch)
PHP memory_limit    256M
PHP post_max_size    32M
PHP upload_max_filesize    32M
PHP max_input_vars    1000
PHP max_execution_time    30

 

Thanks for this info!