Warning: session_cache_limiter():

Bei meinem System ist der DBAdmin nicht funktional

==> var/log/error-2018-10-04.log <==
[04-Oct-2018 11:05:10 Europe/Berlin] PHP Fatal error:  Uncaught ErrorException: Warning: session_cache_limiter(): Cannot change cache limiter when session is active in /var/www/qtest/packages/quiqqer/dbadmin/lib/adminer-4.3.1-mysql.php:159
Stack trace:
#0 [internal function]: exception_error_handler(2, 'session_cache_l...', '/var/www/qtest/...', 159, Array)
#1 /var/www/qtest/packages/quiqqer/dbadmin/lib/adminer-4.3.1-mysql.php(159): session_cache_limiter('')
#2 /var/www/qtest/packages/quiqqer/dbadmin/bin/adminer.php(62): require('/var/www/qtest/...')
#3 {main}
  thrown in /var/www/qtest/packages/quiqqer/dbadmin/lib/adminer-4.3.1-mysql.php on line 159

System

PHP Version 7.2.10-1+ubuntu16.04.1+deb.sury.org+1
System	Linux hen 4.4.0-135-generic #161-Ubuntu SMP Mon Aug 27 10:45:01 UTC 2018 x86_64
Build Date	Oct 1 2018 11:45:50
Server API	Apache 2.0 Handler