Question Kunena Latest Empty after 5.10.1 Upgrade

As per the subject, content disappeared from the module as soon as upgraded to 5.10.1

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: 120 seconds | Max execution memory: 768M | Max file upload: 128M

Kunena menu details:

Warning: Spoiler!

ID	Name	Menutype	Link	Path	In trash
927	Forum	quick-access	view=home&defaultmenu=1308	forum-recent	No
160	Forum	mainmenu	view=home&defaultmenu=1308	ggc-forum	No
1306	Forum	kunenamenu	view=home&defaultmenu=1307	forum	No
1307	Index	kunenamenu	view=category&layout=list	forum/index	No
1308	Recent Topics	kunenamenu	view=topics&mode=replies	forum/recent	No
1309	Unread	kunenamenu	view=topics&layout=unread	forum/unread	No
1310	New Topic	kunenamenu	view=topic&layout=create	forum/newtopic	No
1311	No Replies	kunenamenu	view=topics&mode=noreplies	forum/noreplies	No
1312	My Topics	kunenamenu	view=topics&layout=user&mode=default	forum/mylatest	No
1313	Profile	kunenamenu	view=user	forum/profile	No
1314	Help	kunenamenu	view=misc	forum/help	No
1315	Search	kunenamenu	view=search	forum/search	No

Joomla default template details : rt_vermilion | author: RocketTheme, LLC | version: 1.7 | creationdate: October 30, 2017

Kunena default template details : Crypsis | author: Kunena Team | version: 5.1.11 | creationdate: 2019-04-21

Kunena template params:

Warning: Spoiler!

DefaultCategoryicon	icon-folder
profileIconset	default
DefaultIconset	default
editorIconset	default
lightboxColor	black
bootstrap	1
icomoon	1
tooltips	1
borderless	1
SubjectLengthMessage	150
fullactions	1
quick	0
displayMenu	1
displayDropdownMenu	1
displayDropdownContent	1
displayModule	1
displayBreadcrumb	1
displayAnnouncement	0
displayFooter	1
avatarPosition	left
avatarType	img-polaroid
labels	0
whoisonlineName	both
formRecover	1
topicicontype	fa
fontawesome	1
socialshare	0
socialsharetag
socialtheme	classic
writeaccess	0
localstorage	0
video	1
maps	1
emoticons	1
twitter	1
ebay	0
link	1
picture	1
hide	0
spoiler	0
table	1
code	1
quote	1
divider	1
instagram	1
soundcloud	1
confidential	0
hr	1
listitem	1
supscript	1
subscript	1
numericlist	1
bulletedlist	1
alignright	1
alignleft	1
center	1
underline	1
italic	1
bold	1
strikethrough	1
colors	1
size	1
IconColor	inherit
IconColorNew	#48a348
avatarSizeX	40
avatarSizeY	90
avatarSizeXThumb	36
avatarSizeYThumb	36
avatarSizeXWelcome	72
avatarSizeYWelcome	72
avatarSizeXList	36
avatarSizeYList	36
avatarSizeXPost	144
avatarSizeYPost	144
avatarSizeXProfile	200
avatarSizeYProfile	200
optional_username	0
editor	0
wysibb
templatebyText
templatebyName
templatebyLink

Kunena version detailed: Kunena 5.1.11 | 2019-04-21 [ Kerberos ]
| Kunena detailed configuration:

Warning: Spoiler!

Kunena config settings:
board_offline	0
enablerss	1
threads_per_page	20
messages_per_page	12
messages_per_page_search	12
showhistory	1
historylimit	8
shownew	1
disemoticons	0
template	crypsis
showannouncement	0
avataroncat	0
catimagepath	category_images
showchildcaticon	1
rtewidth	450
rteheight	200
enableforumjump	1
reportmsg	0
username	0
askemail	1
showemail	1
showuserstats	0
showkarma	0
useredit	1
useredittime	0
useredittimegrace	600
editmarkup	1
allowsubscriptions	1
subscriptionschecked	1
allowfavorites	0
maxsubject	120
maxsig	300
regonly	1
pubwrite	0
floodprotection	0
mailmod	-1
mailadmin	-1
captcha	0
mailfull	1
allowavatarupload	1
allowavatargallery	0
avatarquality	75
avatarsize	256
imageheight	1600
imagewidth	1600
imagesize	2048
filetypes	dat,txt,rtf,pdf,zip,tar.gz,tgz,tar.bz2,igc,cup
filesize	2048
showranking	1
rankimages	1
userlist_rows	30
userlist_online	1
userlist_avatar	1
userlist_posts	1
userlist_karma	0
userlist_email	1
userlist_joindate	0
userlist_lastvisitdate	1
userlist_userhits	0
latestcategory	0
showstats	1
showwhoisonline	1
showgenstats	1
showpopuserstats	1
popusercount	50
showpopsubjectstats	1
popsubjectcount	50
showspoilertag	0
showvideotag	1
showebaytag	0
trimlongurls	0
trimlongurlsfront	40
trimlongurlsback	20
autoembedyoutube	1
autoembedebay	0
ebaylanguagecode	en-us
sessiontimeout	7200
highlightcode	1
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	1
pollnboptions	5
pollallowvoteone	1
pollenabled	1
poppollscount	5
showpoppollstats	0
polltimebtvotes	00:15:00
pollnbvotesbyuser	100
pollresultsuserslist	1
allow_user_edit_poll	0
maxpersotext	50
ordering_system	replyid
post_dateformat	datetime
post_dateformat_hover	datetime
hide_ip	0
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	1
latestcategory_in	1
topicicons	0
debug	0
catsautosubscribed	0
showbannedreason	0
showthankyou	0
showpopthankyoustats	0
popthankscount	5
mod_see_deleted	0
bbcode_img_secure	text
listcat_show_moderators	0
lightbox	1
show_list_time	720
show_session_type	1
show_session_starttime	0
userlist_allowed	0
userlist_count_users	1
enable_threaded_layouts	1
category_subscriptions	post
topic_subscriptions	every
pubprofile	0
thankyou_max	10
email_recipient_count	10
email_recipient_privacy	bcc
captcha_post_limit	0
image_upload	registered
file_upload	registered
topic_layout	flat
time_to_create_page	1
show_imgfiles_manage_profile	1
hold_newusers_posts	0
hold_guest_posts	0
attachment_limit	8
pickup_category	0
article_display	intro
send_emails	1
fallback_english	1
cache	0
cache_time	60
iptracking	1
rss_feedburner_url
autolink	1
access_component	1
statslink_allowed	0
superadmin_userlist	0
legacy_urls	1
attachment_protection	0
categoryicons	1
avatarresizemethod	1
avatarcrop	0
user_report	1
searchtime	365
teaser	0
ebay_language	0
allow_change_subject	1
max_links	6
read_only	0
ratingenabled	0
url_subject_topic	0
log_moderation	0
attach_start	0
attach_end	14
attachment_utf8	1
autoembedsoundcloud	1
emailheader	/media/kunena/email/hero-wide.png
user_status	1
signature	1
personal	1
social	1
plain_email	1
moderator_permdelete	1
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	1
use_system_emails	0
autoembedinstagram	1
recaptcha_publickey
recaptcha_privatekey
recaptcha_theme	white
keywords	0
userkeywords	0
userlist_name	1
usernamechange	0
version_check	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 (en-GB)
en-AU	English (AU)

Third-party components: None

Third-party SEF components: None

Plugins: Search - Kunena Search 5.1.1

Modules: Kunena Latest 5.1.1 | Kunena Stats 5.1.1 | Kunena Login 5.1.1 | Kunena Search 5.1.1

Happy Easter to all
I also have the same problem and on two sites.

I also upgraded the module, but the result is unchanged, there are no forum messages.

Same here and the error is:
Warning: preg_replace_callback(): Delimiter must not be alphanumeric or backslash in /components/com_kunena/views/topics/view.html.php on line 212
Here is the code. line 212 starts with $contents

Interestingly I got similar error when upgrading to PHP 7.3, but for the previous version.

So they will do an update after the holidays?

www.kunena.org/forum/k5-1-support/158162-bug-in-5-1-11
BTW: Your topic title is incorrect!

Thanks! This fix worked! It is very easy to fix.

Ok, with php 7.2 it works

Happy Easter and thank you for everything

This fix did not work with PHP 7.3,

ok fixed, please update.