Hi, I'm using various plugins. After further investigation from my hosting provider here is some extra info:
## connecting into database and sending some INSERT query (probably , to add a new forum user):
32634 recvfrom(4, "\7\0\0\1\0\0\0\2\0\0\0", 10868, MSG_DONTWAIT, NULL, NULL) = 11
32634 sendto(4, "\325\4\0\0\3\n\t\t\tINSERT\n\t\t\tINTO kagiak_users (
username,
password,
salt,
loginkey,
email,
postnum,
threadnum,
avatar,
avatartype,
usergroup,
additionalgroups,
displaygroup,
usertitle,
regdate,
lastactive,
lastvisit,
website,
icq,
yahoo,
skype,
google,
birthday,
signature,
allownotices,
hideemail,
subscriptionmethod,
receivepms,
receivefrombuddy,
pmnotice,
pmnotify,
showimages,
showvideos,
showsigs,
showavatars,
showquickreply,
showredirect,
tpp,
ppp,
invisible,
style,
timezone,
dstcorrection,
threadmode,
daysprune,
dateformat,
timeformat,
regip,
language,
showcodebuttons,
sourceeditor,
buddyrequestspm,
buddyrequestsauto,
away,
awaydate,
returndate,
awayreason,
notepad,
referrer,
referrals,
buddylist,
ignorelist,
pmfolders,
warningpoints,
moderateposts,
moderationtime,
suspendposting,
suspensiontime,
coppauser,
classicpostbit,
usernotes)\n\t\t\tVALUES ('dasupport','4c34464c5d1e35226eb39e6142cff74c','aaKP7Ztk','mea1nldvlLoxB3jVQEuu3ADOC8rDZhZJFgVANaCRQfJeB3yq5g','
[email protected]',0,0,'','',5,'',0,'',1547024940,1547024940,1547024940,'',0,'','','','','',0,0,0,0,0,0,0,1,1,1,1,1,1,0,0,0,0,'0',2,'linear',0,'','',X'5bf303b7','',1,0,1,0,0,0,0,'','',0,0,'','','',0,0,0,0,0,0,0,'')\n\t\t", 1241, MSG_DONTWAIT, NULL, 0) = 1241
But response is:
32634 poll([{fd=4, events=POLLIN|POLLERR|POLLHUP}], 1, 86400000) = 1 ([{fd=4, revents=POLLIN}])
32634 recvfrom(4, "1\0\0\1\377T\5#HY000Field 'aim' doesn't have a default value", 10857, MSG_DONTWAIT, NULL, NULL) = 53
And it produce the error:
32634 chdir("/") = 0
32634 times({tms_utime=130, tms_stime=24, tms_cutime=0, tms_cstime=0}) = 1722435185
32634 setitimer(ITIMER_PROF, {it_interval={tv_sec=0, tv_usec=0}, it_value={tv_sec=0, tv_usec=0}}, NULL) = 0
32634 utime("/home/admin/tmp/sess_ohpq6a0f9tggjll74nkv98f23n", NULL) = 0
32634 close(5) = 0
32634 close(6) = 0
32634 sendto(4, "\1\0\0\0\1", 5, MSG_DONTWAIT, NULL, 0) = 5
32634 close(4) = 0
32634 write(3, "\1\6\0\1\r\307\1\0Status: 503 Service Temporarily Unavailable\r\nX-Powered-By: PHP/7.2.13...
The exact error is "HY000Field 'aim' doesn't have a default value" which means that database structure for this forum does not match inserted values.
I've added a default value of null to the aim field and worked afterwards.