Index: owncloud/config/config.sample.php
--- owncloud/config/config.sample.php.orig	2021-03-26 16:55:57.000000000 +0100
+++ owncloud/config/config.sample.php	2021-03-31 13:05:11.472370000 +0200
@@ -79,7 +79,7 @@
  * The SQLite database is also stored here, when you use SQLite.
  * (SQLite is not available in ownCloud Enterprise Edition)
  */
-'datadirectory' => '/var/www/owncloud/data',
+'datadirectory' => '@l_prefix@/var/owncloud/data',
 
 /**
  * Define the directory where the crash logs will be stored
@@ -817,13 +817,13 @@
 'apps_paths' => [
 	0 =>
 		[
-			'path' => OC::$SERVERROOT.'/apps',
+            'path' => '@l_prefix@/lib/owncloud/apps',
 			'url' => '/apps',
 			'writable' => false,
 		],
 	1 =>
 		[
-			'path' => OC::$SERVERROOT.'/apps-external',
+            'path' => '@l_prefix@/lib/owncloud/apps-external',
 			'url' => '/apps-external',
 			'writable' => true,
 		],
@@ -1211,7 +1211,7 @@
  * encryption in MySQL or specify a custom wait timeout on a cheap hoster.
  */
 'dbdriveroptions' => [
-	PDO::MYSQL_ATTR_SSL_CA => '/file/path/to/ca_cert.pem',
+    /* PDO::MYSQL_ATTR_SSL_CA => '/file/path/to/ca_cert.pem', */
 	PDO::MYSQL_ATTR_INIT_COMMAND => 'SET wait_timeout = 28800'
   ],