Solved Kunena Discuss Error: Rendering Error in layout Topic/Item

The Kunena Discuss is displayed before Read More in the Article Newsflash Module and "Rendering Error in layout Topic/Item: Call to a member function getIcon() on null. Please enable debug mode for more information." The error occur when the Article Newsflash Module is shown on a page that does not have any articles to be commented. The error do not occur when the Article Newsflash Module is shown on on a page where a single article is shown in stead of the blog view. It doesn't matter if I add the category of the page and a Kunena Discuss category and link them for the category.

I've tested to show the Article Newsflash Module on another menu page showing a single article and the error appears there too, so it seems that this error only appear when displaying the Article Newsflash Module on a page where a single article is show.

Kunena Discuss debug:

[KunenaDiscuss debug: onPrepareContent.Parent category ID is: 9 ]
[KunenaDiscuss debug: onPrepareContent.Allow: Category 73 is in the category map using Kunena category 46 ]
[KunenaDiscuss debug: onPrepareContent: we are viewing an article. ]
[KunenaDiscuss debug: onPrepareContent: Article 159 ]
[KunenaDiscuss debug: onPrepareContent: Custom Topics disabled ]
[KunenaDiscuss debug: showPlugin: Loading Stored Topic 12 ]
[KunenaDiscuss debug: showPlugin: Close time by last post ]
[KunenaDiscuss debug: showPlugin: Displaying form ]
[KunenaDiscuss debug: showTopic: Rendering discussion ]

I'm running: Joomla 3.9.19, Protostar template, Kunena 5.1.16, Kunena Discuss 5.1.2

Any idea why this error occur and how to solve it?

Please enable debug mode for more information.

I think you should enable the Kunena debug and also additionally also Joomla debug. Set the error report to maximum for Joomla debug (Global Configuration -> tab Server). Maybe you get more precise error message.

I must have forgotten about this issue I already had 9 months ago. I found my old post when searching for a solution when I saw this issue again.

Error message without activating debug:
Rendering Error in layout Topic/Item: Call to a member function getIcon() on null. Please enable debug mode for more information.

Joomla Debug:
Rendering Error in layout Topic/Item: Property "topic" is not defined in /mywebsite.com/components/com_kunena/template/crypsis/layouts/topic/item/default.php on line 15
Layout was rendered in /mywebsite.com/libraries/kunena/layout/base.php on line 168

Kunena Discuss debug:
[KunenaDiscuss debug: Constructor called in com_content ]
[KunenaDiscuss debug: createTable: Check if plugin table exists. ]
[KunenaDiscuss debug: onPrepareContent.Parent category ID is: 11 ]
[KunenaDiscuss debug: onPrepareContent.Allow: Category 70 is in the category map using Kunena category 38 ]
[KunenaDiscuss debug: onPrepareContent: we are viewing an article. ]
[KunenaDiscuss debug: onPrepareContent: Article 328 ]
[KunenaDiscuss debug: onPrepareContent: Custom Topics disabled ]
[KunenaDiscuss debug: showPlugin: Loading Stored Topic 49 ]
[KunenaDiscuss debug: showPlugin: Close time by last post ]
[KunenaDiscuss debug: showPlugin: Displaying form ]
[KunenaDiscuss debug: showTopic: Rendering discussion ][KunenaDiscuss debug: onAfterDisplayContent: Returning content for article 328 ]

Joomla: 3.9.25
Kunena: 5.2.3 (2021-03-07)
Kunena Discuss: 5.2.1 (2021-03-08)

Joomla Debug:
Rendering Error in layout Topic/Item: Property "topic" is not defined in /mywebsite.com/components/com_kunena/template/crypsis/layouts/topic/item/default.php on line 15
Layout was rendered in /mywebsite.com/libraries/kunena/layout/base.php on line 168

Line 15 (default.php): $topic = $this->topic;

Line 168 (base.php): include $path;

It looks like the $topic array does not get filed with values.

This is the configuration:

Database collation check: ✔ The collation of your table fields are correct
        

Joomla! SEF: Enabled | Joomla! SEF rewrite: Enabled | FTP layer: Disabled |
        

This message contains confidential information

htaccess: Exists | PHP environment: Max execution time: 30 seconds | Max execution memory: 768M | Max file upload: 512M

Kunena menu details:

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ID	Name	Menutype	Link	Path	In trash
136	Forum	english-main-menu	view=category&catid=31	forum	No
1062	Recent Topics	english-main-menu	view=topics&mode=replies	forum/recent-topics	No
1063	My Topics	english-main-menu	view=topics&layout=user&mode=default	forum/my-topics	No
151	Foro	spanish-main-menu	view=category&catid=32	foro	No
1064	Temas Recientes	spanish-main-menu	view=topics&mode=replies	foro/temas-recientes	No
1065	Mis temas	spanish-main-menu	view=topics&layout=user&mode=default	foro/mis-temas	No
231	Forum	english-kunena-menu	view=home&defaultmenu=231	forum-en	No
606	In English	english-kunena-menu	view=category&catid=31	forum-en/in-english	No
233	Recent Topics	english-kunena-menu	view=topics&mode=replies	forum-en/recent-topics	No
234	Unread	english-kunena-menu	view=topics&layout=unread	forum-en/unread	No
235	New Topic	english-kunena-menu	view=topic&layout=create	forum-en/new-topic	No
236	No Replies	english-kunena-menu	view=topics&mode=noreplies	forum-en/no-replies	No
237	My Topics	english-kunena-menu	view=topics&layout=user&mode=default	forum-en/my-topics	No
240	Search	english-kunena-menu	view=search	forum-en/search	No
238	Profile	english-kunena-menu	view=user	forum-en/profile	No
239	Help	english-kunena-menu	view=misc	forum-en/help	No
605	Foro	spanish-kunena-menu	view=home&defaultmenu=605	foro-es	No
610	Sin respuestas	spanish-kunena-menu	view=topics&mode=noreplies	foro-es/sin-respuestas	No
611	Mis temas	spanish-kunena-menu	view=topics&layout=user&mode=default	foro-es/mis-temas	No
612	Buscar	spanish-kunena-menu	view=search	foro-es/buscar	No
614	Perfil	spanish-kunena-menu	view=user	foro-es/perfil	No
613	Ayuda	spanish-kunena-menu	view=misc	foro-es/ayuda	No
232	En Español	spanish-kunena-menu	view=category&catid=32	foro-es/en-espanol	No
607	Temas Recientes	spanish-kunena-menu	view=topics&mode=replies	foro-es/temas-recientes	No
608	No leído	spanish-kunena-menu	view=topics&layout=unread	foro-es/no-leido	No
609	Nuevo tema	spanish-kunena-menu	view=topic&layout=create	foro-es/nuevo-tema	No
618	Forum	kunenamenu	view=home&defaultmenu=620	kunena	No
619	Index	kunenamenu	view=category&layout=list	kunena/index	No
620	Recent Topics	kunenamenu	view=topics&mode=replies	kunena/recent	No
621	Unread	kunenamenu	view=topics&layout=unread	kunena/unread	No
622	New Topic	kunenamenu	view=topic&layout=create	kunena/newtopic	No
623	No Replies	kunenamenu	view=topics&mode=noreplies	kunena/noreplies	No
624	My Topics	kunenamenu	view=topics&layout=user&mode=default	kunena/mylatest	No
625	Profile	kunenamenu	view=user	kunena/profile	No
626	Help	kunenamenu	view=misc	kunena/help	No
627	Search	kunenamenu	view=search	kunena/search	No
628	Forum	main-menu	Itemid=618	kunena-2020-06-07	No

Joomla default template details : protostar | author: Kyle Ledbetter | version: 1.0 | creationdate: 4/30/2012

Kunena default template details : Crypsis | author: Kunena Team | version: 5.2.3 | creationdate: 2021-03-07

Kunena template params:

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DefaultCategoryicon
profileIconset	default
DefaultIconset	default
editorIconset	default
bootstrap	1
icomoon	1
tooltips	1
borderless	1
SubjectLengthMessage	80
fullactions	1
quick	0
displayMenu	1
displayDropdownMenu	1
displayDropdownContent	1
displayModule	1
displayBreadcrumb	1
displayAnnouncement	0
displayFooter	0
avatarPosition	left
avatarType	img-circle
labels	0
whoisonlineName	default
formRecover	1
topicicontype	B2
fontawesome	0
socialshare	0
socialsharetag
socialtheme	classic
optional_username	0
writeaccess	0
localstorage	1
IconColor	inherit
IconColorNew	#48a348
editor	0
video	0
maps	0
emoticons	1
twitter	0
ebay	0
link	1
picture	1
hide	0
spoiler	0
table	1
code	0
quote	1
divider	1
instagram	0
soundcloud	0
confidential	0
hr	0
listitem	1
supscript	0
subscript	0
numericlist	1
bulletedlist	1
alignright	1
alignleft	1
center	1
underline	1
italic	1
bold	1
strikethrough	1
colors	0
size	0
wysibb	bold,italic,underline,strike,justifyleft,justifycenter,justifyright,|,img,link,|,bullist,numlist,|,fontsize,fontfamily,|,quote,table,removeFormat
avatarSizeX	40
avatarSizeY	90
avatarSizeXThumb	36
avatarSizeYThumb	36
avatarSizeXWelcome	72
avatarSizeYWelcome	72
avatarSizeXList	36
avatarSizeYList	36
avatarSizeXPost	144
avatarSizeYPost	144
avatarSizeXProfile	200
avatarSizeYProfile	200
templatebyText
templatebyName
templatebyLink
Bold	1
Italic	1
Underline	1
Strike	1
Subscript	1
Superscript	1
RemoveFormat	1
BulletedList	1
NumberedList	1
Blockquote	1
JustifyLeft	1
JustifyCenter	1
JustifyRight	1
JustifyBlock	1
Link_Unlink	1
Image	1
Smiley	1
Confidential	1
Hidetext	1
Spoiler	1
Code	1
Ebay	1
Twitter	1
Instagram	1
Soundcloud	1
FontSize	1
TextColor	1
Maximize	1
Map	1
Video	1
editorButtons
nameskinckeditor
ckeditorcustomprefixconfigfile

Kunena version detailed: Kunena 5.2.3 | 2021-03-07 [ Jason ]
        | Kunena detailed configuration:

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Kunena config settings:
board_offline	0
enablerss	0
threads_per_page	20
messages_per_page	6
messages_per_page_search	15
showhistory	1
historylimit	6
shownew	1
disemoticons	0
template	crypsis
showannouncement	1
avataroncat	0
catimagepath	category_images
showchildcaticon	1
rtewidth	450
rteheight	300
enableforumjump	1
reportmsg	1
username	0
askemail	1
showemail	0
showuserstats	0
showkarma	0
useredit	2
useredittime	0
useredittimegrace	600
editmarkup	1
allowsubscriptions	1
subscriptionschecked	1
allowfavorites	1
maxsubject	50
maxsig	300
regonly	0
pubwrite	0
floodprotection	3
mailmod	0
mailadmin	0
captcha	0
mailfull	1
allowavatarupload	1
allowavatargallery	1
avatarquality	75
avatarsize	2048
imageheight	900
imagewidth	900
imagesize	1000
filetypes	pdf
filesize	1000
showranking	0
rankimages	0
userlist_rows	30
userlist_online	1
userlist_avatar	1
userlist_posts	1
userlist_karma	1
userlist_email	0
userlist_joindate	0
userlist_lastvisitdate	1
userlist_userhits	1
latestcategory	0
showstats	0
showwhoisonline	0
showgenstats	0
showpopuserstats	0
popusercount	5
showpopsubjectstats	0
popsubjectcount	5
showspoilertag	1
showvideotag	1
showebaytag	1
trimlongurls	0
trimlongurlsfront	40
trimlongurlsback	20
autoembedyoutube	1
autoembedebay	0
ebaylanguagecode	en-us
sessiontimeout	1800
highlightcode	0
rss_type	topic
rss_timelimit	month
rss_limit	100
rss_included_categories
rss_excluded_categories
rss_specification	rss2.0
rss_allow_html	1
rss_author_format	name
rss_author_in_title	1
rss_word_count	0
rss_old_titles	1
rss_cache	900
defaultpage	recent
default_sort	asc
sef	1
showimgforguest	1
showfileforguest	0
pollnboptions	4
pollallowvoteone	1
pollenabled	1
poppollscount	5
showpoppollstats	0
polltimebtvotes	00:15:00
pollnbvotesbyuser	100
pollresultsuserslist	0
allow_user_edit_poll	0
maxpersotext	50
ordering_system	replyid
post_dateformat	ago
post_dateformat_hover	datetime
hide_ip	1
imagetypes	jpg,jpeg,gif,png
checkmimetypes	1
imagemimetypes	image/jpeg,image/jpg,image/gif,image/png
imagequality	50
thumbheight	32
thumbwidth	32
hideuserprofileinfo	put_empty
boxghostmessage	0
userdeletetmessage	0
latestcategory_in	1
topicicons	1
debug	0
catsautosubscribed	0
showbannedreason	1
showthankyou	1
showpopthankyoustats	0
popthankscount	5
mod_see_deleted	0
bbcode_img_secure	text
listcat_show_moderators	0
lightbox	1
show_list_time	8760
show_session_type	2
show_session_starttime	1800
userlist_allowed	0
userlist_count_users	1
enable_threaded_layouts	0
category_subscriptions	post
topic_subscriptions	every
pubprofile	0
thankyou_max	10
email_recipient_count	0
email_recipient_privacy	bcc
captcha_post_limit	10
image_upload	registered
file_upload	registered
topic_layout	threaded
time_to_create_page	1
show_imgfiles_manage_profile	1
hold_newusers_posts	5
hold_guest_posts	1
attachment_limit	4
pickup_category	0
article_display	intro
send_emails	1
fallback_english	1
cache	1
cache_time	60
iptracking	1
rss_feedburner_url
autolink	0
access_component	0
statslink_allowed	0
superadmin_userlist	1
legacy_urls	1
attachment_protection	1
categoryicons	1
avatarresizemethod	1
avatarcrop	0
user_report	1
searchtime	365
teaser	0
ebay_language	186
allow_change_subject	1
max_links	6
read_only	0
ratingenabled	0
url_subject_topic	0
log_moderation	1
attach_start	0
attach_end	14
attachment_utf8	1
autoembedsoundcloud	1
emailheader
user_status	1
signature	1
personal	0
social	0
plain_email	0
moderator_permdelete	0
avatartypes	gif, jpeg, jpg, png
smartlinking	0
defaultavatar	nophoto.png
defaultavatarsmall	s_nophoto.png
quickreply	1
avataredit	0
activemenuitem
mainmenu_id
home_id
index_id
moderators_id
topiclist_id
misc_id
profile_id
search_id
avatar_type	1
sef_redirect	1
allow_edit_poll	0
use_system_emails	0
autoembedinstagram	1
disable_re	0
email_sender_name
display_filename_attachment	0
new_users_prevent_post_url_images	1
minimal_user_posts_add_url_image	1

| Kunena integration settings:

Warning: Spoiler!

Kunena - Finder Disabled
 Kunena - AltaUserPoints Disabled
 Kunena - Community Builder Disabled
 Kunena - Easyblog Disabled
 Kunena - Easyprofile Disabled
 Kunena - Easysocial Disabled
 Kunena - Gravatar Disabled
 Kunena - JomSocial Disabled
 Kunena - Joomla Enabled:  access=1  login=1  
 Kunena - Kunena Enabled:  avatar=1  profile=1  
 Kunena - UddeIM Disabled

| Joomla! detailed language files installed:

Warning: Spoiler!

Joomla! languages installed:
en-GB	English (United Kingdom)
es-ES	Spanish (español)

Third-party components: None

Third-party SEF components: None

Plugins: Content - Kunena Discuss 5.2.1

Modules: None

It seems someone else experienced this issue 4-5 years ago too.

www.kunena.org/forum/k5-0-support/139128...-in-crypsis-template

Please could anyone confirm if Kunena Discuss plugin is working and includes the comments being made in its article. If it works on some websites, then it would be good to know its configuration, so it can be compared with mine where it does not work.