Sorry, only the relevant bit was posted. The entire trace associated with one of these events is posted below. The user “wsoadmin” was created after the migration process. The relevant error messages start at 10:25:06.222329, I believe.
[Fri Mar 22 10:24:54.157941 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] PHP Warning: in_array() expects parameter 2 to be array, integer given in /usr/local/apache2/htdocs/egroupware/api/src/Contacts/Sql.php on line 530, referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.157994 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #1 /usr/local/apache2/htdocs/egroupware/api/src/Contacts/Sql.php(530): in_array(70, 0), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158004 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #2 /usr/local/apache2/htdocs/egroupware/api/src/Contacts/Storage.php(741): EGroupware\\Api\\Contacts\\Sql->search(Array, Array, 'account_lid ASC', 'account_lid,acc...', '%', false, 'OR', Array, Array, ' RIGHT JOIN egw...', false, false), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158014 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #3 /usr/local/apache2/htdocs/egroupware/api/src/Accounts/Sql.php(540): EGroupware\\Api\\Contacts\\Storage->search(Array, Array, 'account_lid ASC', 'account_lid,acc...', '%', false, 'OR', Array, Array, ' RIGHT JOIN egw...'), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158024 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #4 /usr/local/apache2/htdocs/egroupware/api/src/Accounts.php(292): EGroupware\\Api\\Accounts\\Sql->search(Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158033 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #5 /usr/local/apache2/htdocs/egroupware/admin/inc/class.admin_ui.inc.php(331): EGroupware\\Api\\Accounts->search(Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158057 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #6 [internal function]: admin_ui::get_users(Array, Array, Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158065 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #7 /usr/local/apache2/htdocs/egroupware/api/src/Etemplate/Widget/Nextmatch.php(605): call_user_func_array(Array, Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158073 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #8 /usr/local/apache2/htdocs/egroupware/api/src/Etemplate/Widget/Nextmatch.php(185): EGroupware\\Api\\Etemplate\\Widget\\Nextmatch::call_get_rows(Array, Array, Array, NULL, Array, Object(EGroupware\\Api\\Etemplate\\Widget\\Nextmatch)), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158083 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #9 [internal function]: EGroupware\\Api\\Etemplate\\Widget\\Nextmatch->beforeSendToClient('', Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158091 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #10 /usr/local/apache2/htdocs/egroupware/api/src/Etemplate/Widget.php(517): call_user_func_array(Array, Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158099 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #11 /usr/local/apache2/htdocs/egroupware/api/src/Etemplate/Widget/Nextmatch.php(1145): EGroupware\\Api\\Etemplate\\Widget->run('beforeSendToCli...', Array, false), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158107 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #12 /usr/local/apache2/htdocs/egroupware/api/src/Etemplate/Widget.php(523): EGroupware\\Api\\Etemplate\\Widget\\Nextmatch->run('beforeSendToCli...', Array, false), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158124 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #13 /usr/local/apache2/htdocs/egroupware/api/src/Etemplate/Widget/Template.php(264): EGroupware\\Api\\Etemplate\\Widget->run('beforeSendToCli...', Array, false), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158133 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #14 /usr/local/apache2/htdocs/egroupware/api/src/Etemplate.php(168): EGroupware\\Api\\Etemplate\\Widget\\Template->run('beforeSendToCli...', Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158142 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #15 /usr/local/apache2/htdocs/egroupware/admin/inc/class.admin_ui.inc.php(108): EGroupware\\Api\\Etemplate->exec('admin.admin_ui....', Array, Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158150 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #16 /usr/local/apache2/htdocs/egroupware/api/src/Framework/Ajax.php(1018): admin_ui->index(), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158158 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #17 [internal function]: EGroupware\\Api\\Framework\\Ajax::ajax_exec('index.php?menua...'), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158166 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #18 /usr/local/apache2/htdocs/egroupware/api/src/Json/Request.php(179): call_user_func_array(Array, Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158174 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #19 /usr/local/apache2/htdocs/egroupware/api/src/Json/Request.php(91): EGroupware\\Api\\Json\\Request->handleRequest('admin.jdots_fra...', Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158189 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #20 /usr/local/apache2/htdocs/egroupware/json.php(121): EGroupware\\Api\\Json\\Request->parseRequest('admin.jdots_fra...', '{"request":{"pa...'), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158198 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] #21 {main}, referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.158211 2019] [php7:notice] [pid 1107:tid 140683801261824] [client 200.100.100.10:37840] # Instance=default, User=wsoadmin, Request=POST https://example.domain.es?menuaction=admin.admin_ui.index&ajax=true, User-agent=Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0, referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846225 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] PHP Warning: in_array() expects parameter 2 to be array, integer given in /usr/local/apache2/htdocs/egroupware/api/src/Contacts/Sql.php on line 530, referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846275 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] #1 /usr/local/apache2/htdocs/egroupware/api/src/Contacts/Sql.php(530): in_array(70, 0), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846285 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] #2 /usr/local/apache2/htdocs/egroupware/api/src/Contacts/Storage.php(741): EGroupware\\Api\\Contacts\\Sql->search(Array, Array, 'account_lid', 'account_lid,acc...', '%', false, 'OR', 0, Array, ' RIGHT JOIN egw...', false, false), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846294 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] #3 /usr/local/apache2/htdocs/egroupware/api/src/Accounts/Sql.php(540): EGroupware\\Api\\Contacts\\Storage->search(Array, Array, 'account_lid', 'account_lid,acc...', '%', false, 'OR', 0, Array, ' RIGHT JOIN egw...'), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846303 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] #4 /usr/local/apache2/htdocs/egroupware/api/src/Accounts.php(292): EGroupware\\Api\\Accounts\\Sql->search(Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846311 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] #5 /usr/local/apache2/htdocs/egroupware/admin/inc/class.admin_statistics.inc.php(172): EGroupware\\Api\\Accounts->search(Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846319 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] #6 /usr/local/apache2/htdocs/egroupware/admin/inc/class.admin_statistics.inc.php(98): admin_statistics::gather_data(), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846327 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] #7 /usr/local/apache2/htdocs/egroupware/api/src/Framework/Ajax.php(1018): admin_statistics->submit(), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846336 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] #8 [internal function]: EGroupware\\Api\\Framework\\Ajax::ajax_exec('/egroupware/ind...'), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846344 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] #9 /usr/local/apache2/htdocs/egroupware/api/src/Json/Request.php(179): call_user_func_array(Array, Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846371 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] #10 /usr/local/apache2/htdocs/egroupware/api/src/Json/Request.php(91): EGroupware\\Api\\Json\\Request->handleRequest('admin.jdots_fra...', Array), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846380 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] #11 /usr/local/apache2/htdocs/egroupware/json.php(121): EGroupware\\Api\\Json\\Request->parseRequest('admin.jdots_fra...', '{"request":{"pa...'), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846389 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] #12 {main}, referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:24:54.846402 2019] [php7:notice] [pid 1107:tid 140683650258688] [client 200.100.100.10:37840] # Instance=default, User=wsoadmin, Request=POST https://example.domain.es?menuaction=admin.admin_statistics.submit&ajax=true, User-agent=Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0, referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:25:06.222329 2019] [php7:notice] [pid 1107:tid 140683658651392] [client 200.100.100.10:37848] An error happened (EGroupware\\Api\\Exception\\AssertionFailed): CreateObject() file /usr/local/apache2/htdocs/egroupware/api/inc/class..inc.php not found!, referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:25:06.222373 2019] [php7:notice] [pid 1107:tid 140683658651392] [client 200.100.100.10:37848] #0 /usr/local/apache2/htdocs/egroupware/index.php(151): CreateObject('api.'), referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:25:06.222383 2019] [php7:notice] [pid 1107:tid 140683658651392] [client 200.100.100.10:37848] #1 {main}, referer: https://example.domain.es/egroupware/index.php?cd=yes
[Fri Mar 22 10:25:06.222396 2019] [php7:notice] [pid 1107:tid 140683658651392] [client 200.100.100.10:37848] # Instance=default, User=wsoadmin, Request=GET https://example.domain.es/egroupware/index.php?account_id=56, User-agent=Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0, referer: https://example.domain.es/egroupware/index.php?cd=yes