Important 500 Internal Server Error started with no changes to website

Morning, I have read through your document on 500 Internal Server Errors and I'm pretty sure none of these relate to my situation.

Up until yesterday, the forum was performing perfectly. I am using j2.5.28 and Kunena 3.07. It doesn't have many users, maybe 130 with perhaps 2, 3 or 4 members on at any one time. It is hosted on a Rochen shared server.

At sometime during the day I hit my first 500 error and subsequently, my users are also now reporting problems when trying to post. Nothing was changed, no new software was added, no configuration, system or server changes were done. The error just suddenly started and continues. Interestingly, the error is only associated with posting (not edits) and although it throws the error, the post is added to the forum. I am left scratching my head on this one.

I turned on debugging and here are some of the things I am seeing - other than the 500 error itself which I have added as an attachment

Strict Standards: Declaration of KunenaActivityCommunity::onAfterPost() should be compatible with that of KunenaActivity::onAfterPost() in /home/uwgwnvhp/public_html/plugins/kunena/community/activity.php on line 16

Strict Standards: Declaration of KunenaActivityCommunity::onAfterReply() should be compatible with that of KunenaActivity::onAfterReply() in /home/uwgwnvhp/public_html/plugins/kunena/community/activity.php on line 16

Strict Standards: Declaration of KunenaActivityCommunity::onAfterThankyou() should be compatible with that of KunenaActivity::onAfterThankyou() in /home/uwgwnvhp/public_html/plugins/kunena/community/activity.php on line 16

also

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/tagmeta/tagmeta.php on line 618

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/ijoomlaupdate/ijoomlaupdate.php on line 93

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/ijoomlaupdate/ijoomlaupdate.php on line 93

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/ijoomlaupdate/ijoomlaupdate.php on line 93

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/ijoomlaupdate/ijoomlaupdate.php on line 93

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/ijoomlaupdate/ijoomlaupdate.php on line 93

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/ijoomlaupdate/ijoomlaupdate.php on line 93

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/ijoomlaupdate/ijoomlaupdate.php on line 93

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/ijoomlaupdate/ijoomlaupdate.php on line 93

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/ijoomlaupdate/ijoomlaupdate.php on line 93

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/ijoomlaupdate/ijoomlaupdate.php on line 165

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/ijoomlaupdate/ijoomlaupdate.php on line 171

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/ijoomlaupdate/ijoomlaupdate.php on line 58

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/jumi/jumi.php on line 25

and

Strict Standards: Only variables should be assigned by reference in /home/uwgwnvhp/public_html/plugins/system/tagmeta/tagmeta.php on line 618

Also, here is the configuration report you requested.

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: 128M | Max file upload: 20M

Kunena menu details:

Warning: Spoiler!

ID	Name	Menutype	Link	Path	In trash
874	Forum	aboutmenu	Itemid=865	kunena-2013-09-04	No
865	Forum	kunenamenu	view=home&defaultmenu=867	forum	No
866	Index	kunenamenu	view=category&layout=list	forum/index	No
867	Recent Topics	kunenamenu	view=topics&mode=replies	forum/recent	No
868	New Topic	kunenamenu	view=topic&layout=create	forum/newtopic	No
869	No Replies	kunenamenu	view=topics&mode=noreplies	forum/noreplies	No
870	My Topics	kunenamenu	view=topics&layout=user&mode=default	forum/mylatest	No
871	Profile	kunenamenu	view=user	forum/profile	No
872	Help	kunenamenu	view=misc	forum/help	No
873	Search	kunenamenu	view=search	forum/search	No
1068	Member Area	mainmenu	view=home&defaultmenu=464	private-member-area	No

Joomla default template details : rt_stratos | author: RocketTheme, LLC | version: 1.1 | creationdate: Unknown

Kunena default template details : Blue Eagle | author: Kunena Team | version: 3.0.7 | creationdate: 2015-02-01

Kunena version detailed: Kunena 3.0.7 | 2015-02-01 [ Galah ]
| Kunena detailed configuration:

Warning: Spoiler!

Kunena config settings:
board_offline	0
enablerss	0
threads_per_page	15
messages_per_page	6
messages_per_page_search	15
showhistory	1
historylimit	6
shownew	1
disemoticons	0
template	blue_eagle
showannouncement	1
avataroncat	0
catimagepath	category_images
showchildcaticon	1
rtewidth	450
rteheight	300
enableforumjump	1
reportmsg	1
username	1
askemail	0
showemail	0
showuserstats	1
showkarma	1
useredit	1
useredittime	0
useredittimegrace	600
editmarkup	1
allowsubscriptions	1
subscriptionschecked	1
allowfavorites	1
maxsubject	50
maxsig	300
regonly	1
pubwrite	0
floodprotection	0
mailmod	0
mailadmin	0
captcha	0
mailfull	0
allowavatarupload	1
allowavatargallery	1
avatarquality	75
avatarsize	2048
imageheight	800
imagewidth	800
imagesize	150
filetypes	txt,rtf,pdf,zip,tar.gz,tgz,tar.bz2
filesize	120
showranking	1
rankimages	1
userlist_rows	30
userlist_online	1
userlist_avatar	1
userlist_name	0
userlist_posts	1
userlist_karma	1
userlist_email	0
userlist_joindate	1
userlist_lastvisitdate	1
userlist_userhits	1
latestcategory
showstats	1
showwhoisonline	1
showgenstats	1
showpopuserstats	1
popusercount	5
showpopsubjectstats	1
popsubjectcount	5
usernamechange	1
showspoilertag	1
showvideotag	1
showebaytag	1
trimlongurls	1
trimlongurlsfront	40
trimlongurlsback	20
autoembedyoutube	1
autoembedebay	1
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	0
showfileforguest	1
pollnboptions	5
pollallowvoteone	1
pollenabled	1
poppollscount	5
showpoppollstats	1
polltimebtvotes	00:15:00
pollnbvotesbyuser	100
pollresultsuserslist	1
maxpersotext	50
ordering_system	mesid
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	1
latestcategory_in	1
topicicons	1
debug	0
catsautosubscribed	0
showbannedreason	0
version_check	1
showthankyou	1
showpopthankyoustats	1
popthankscount	5
mod_see_deleted	1
bbcode_img_secure	text
listcat_show_moderators	1
lightbox	1
show_list_time	720
show_session_type	0
show_session_starttime	0
userlist_allowed	1
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	0
keywords	0
userkeywords	0
image_upload	registered
file_upload	registered
topic_layout	indented
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	1
cache_time	60
iptracking	1
rss_feedburner_url
autolink	1
access_component	1
statslink_allowed	0
superadmin_userlist	0
ebay_language	0
ebaylanguagecode	en-us

| Kunena integration settings:

Warning: Spoiler!

Kunena - AlphaUserPoints Disabled
Kunena - Community Builder Disabled
Kunena - Gravatar Disabled
Kunena - JomSocial Enabled: access=1 login=1 activity=1 avatar=1 profile=1 private=1 activity_points_limit=0 activity_stream_limit=0
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)

Third-party components: Jomsocial 3.1.1

Third-party SEF components: None

Plugins: JomSocial - My Kunena Forum Menu 2.0.3 | JomSocial - My Kunena Forum Posts 3.0.5.1 | JomSocial - Kunena Groups 2.0.3

Modules: None

I would be grateful for some advice on this.

Thanks guys, hope you can help

Regards
David

try to update jomsocial first. if not working disable activity on the kunena - jomsocial plugin

www.kunena.org/forum/kunena-3-0-support/...-bugs-issue-s#162114