Confirmed on ubuntu 18.04
PHP
PHP 7.2.24-0ubuntu0.18.04.3 (cli) (built: Feb 11 2020 15:55:52) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.2.24-0ubuntu0.18.04.3, Copyright (c) 1999-2018, by Zend Technologies
while trying to upgrade to nextcloud 18.0.6
After uninstallinging, upgrade to 18.0.6 works as expected.
Reinstalling php-imagick afterwards again makes nextcloud server unresponsive (Empty page returned)
So currently no workaround known
Confirmed on ubuntu 18.04 0ubuntu0. 18.04.3 (cli) (built: Feb 11 2020 15:55:52) ( NTS ) 0ubuntu0. 18.04.3, Copyright (c) 1999-2018, by Zend Technologies
PHP
PHP 7.2.24-
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.2.24-
while trying to upgrade to nextcloud 18.0.6
After uninstallinging, upgrade to 18.0.6 works as expected.
Reinstalling php-imagick afterwards again makes nextcloud server unresponsive (Empty page returned)
So currently no workaround known