Error on clicking image, log output is visible

Device: PC
Browser: Firefox (latest)
OS: Windows 10

Steps to reproduce:
1. forums/d2r-armor-appearance-guide-t8650.html
2. Click image in forum post (download/file.php?id=2400&t=1)

phpBB Debug output is visible, pasted below.

"Unable to deliver file"

Anything else to add:


[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/toxyy/shortnumbertwig/template/twig/extension/short_number_twig'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/cleantalk/antispam/event/main_listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/cleantalk/antispam/model/CleantalkSFW'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/cleantalk/antispam/model/main_model'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/cleantalk/antispam/model/Cleantalk'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/cleantalk/antispam/model/CleantalkRequest'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbbseo/usu/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbbseo/usu/core/core'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbbseo/usu/core/traits/customise'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbbseo/usu/core/traits/rewriter'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbbseo/usu/core/traits/url'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbbseo/usu/core/traits/seo'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbbseo/usu/core/traits/get_set'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbbmodders/banhammer/event/banhammer_listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbbmodders/banhammer/core/bantime'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbb/autogroups/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbb/autogroups/conditions/manager'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbb/autogroups/conditions/type/lastvisit'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbb/autogroups/conditions/type/membership'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbb/autogroups/conditions/type/base'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbb/autogroups/conditions/type/type_interface'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/phpbb/autogroups/conditions/type/helper'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/alfredoramos/simplespoiler/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/alfredoramos/simplespoiler/includes/helper'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/anavaro/postlove/event/main_listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/david63/loginredirect/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/david63/loginredirect/core/functions'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/david63/loginredirect/controller/main_controller'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/david63/loginredirect/controller/main_interface'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/dmzx/formcreator/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/flerex/linkedaccounts/event/main_listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/flerex/linkedaccounts/service/linking_service'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/flerex/linkedaccounts/service/auth_service'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/gfksx/ThanksForPosts/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/gfksx/ThanksForPosts/core/helper'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/javiexin/advancedpf/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/kinerity/bestanswer/event/main_listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/lmdi/autolinks/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/marttiphpbb/grouptempvars/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/paul999/mention/event/main_listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/pikaron/nodeaemails/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/pikaron/nodeaemails/core/functions_nodeaemails'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/primehalo/primepostrevisions/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/primehalo/primepostrevisions/core/prime_post_revisions'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/sheer/postbookmark/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/shredder/sitemap/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/siava/sessionkeys/event/main_listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/skouat/ppde/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/skouat/ppde/controller/main_controller'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/skouat/ppde/actions/auth'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/skouat/ppde/actions/currency'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/skouat/ppde/entity/currency'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/skouat/ppde/entity/main'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/skouat/ppde/actions/locale_icu'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/skouat/ppde/operators/currency'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/skouat/ppde/controller/main_display_stats'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/sniper/tables/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/toxyy/shortnumbertwig/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/dark1/memberavatarstatus/event/main_listener'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/dark1/memberavatarstatus/core/avatar'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/dark1/memberavatarstatus/core/status'
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 133: Illegal string offset '/rmcgirr83/elonw/event/listener'
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 1909: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3009)

Warning: Illegal string offset '\phpbb\googleanalytics\event\listener' in /home/teebling/ diablo2.io/phpbb/class_loader.php on line 133

Warning: Illegal string offset '\senky\relativedates\relativedatetime' in /home/teebling/ diablo2.io/phpbb/class_loader.php on line 133

Warning: Illegal string offset '\senky\relativedates\relativetranslator' in /home/teebling/ diablo2.io/phpbb/class_loader.php on line 133

Warning: Illegal string offset '\senky\relativedates\event\listener' in /home/teebling/ diablo2.io/phpbb/class_loader.php on line 133

Warning: Illegal string offset '\alfredoramos\seometadata\event\listener' in /home/teebling/ diablo2.io/phpbb/class_loader.php on line 133

Warning: Illegal string offset '\alfredoramos\seometadata\includes\helper' in /home/teebling/ diablo2.io/phpbb/class_loader.php on line 133

Warning: Illegal string offset '\alg\liveSearch\event\listener' in /home/teebling/ diablo2.io/phpbb/class_loader.php on line 133

Warning: Illegal string offset '\phpbb\boardannouncements\event\listener' in /home/teebling/ diablo2.io/phpbb/class_loader.php on line 133

Warning: Illegal string offset '\rmcgirr83\separateusersandbots\event\listener' in /home/teebling/ diablo2.io/phpbb/class_loader.php on line 133

Warning: Cannot modify header information - headers already sent by (output started at /home/teebling/ diablo2.io/includes/functions.php:3009) in /home/teebling/ diablo2.io/includes/functions.php on line 4166

Warning: Cannot modify header information - headers already sent by (output started at /home/teebling/ diablo2.io/includes/functions.php:3009) in /home/teebling/ diablo2.io/includes/functions.php on line 4166

Warning: Cannot modify header information - headers already sent by (output started at /home/teebling/ diablo2.io/includes/functions.php:3009) in /home/teebling/ diablo2.io/includes/functions.php on line 4166

Warning: Cannot modify header information - headers already sent by (output started at /home/teebling/ diablo2.io/includes/functions.php:3009) in /home/teebling/ diablo2.io/includes/functions.php on line 4166

Warning: Illegal string offset '\marttiphpbb\allusersgroupstempvars\event\listener' in /home/teebling/ diablo2.io/phpbb/class_loader.php on line 133

Warning: Illegal string offset '\marttiphpbb\paramtempvars\event\listener' in /home/teebling/ diablo2.io/phpbb/class_loader.php on line 133