Trying to get property ‘display_name’, ‘ID’, ‘user_email’ of non-object

Replies: 0

Log:

[13-Mar-2019 09:29:14 UTC] PHP Notice:  Trying to get property 'display_name' of non-object in /site_path/wp-content/plugins/bp-better-messages/inc/functions.php on line 494
[13-Mar-2019 09:29:14 UTC] PHP Notice:  Trying to get property 'ID' of non-object in /site_path/wp-content/plugins/bp-better-messages/inc/functions.php on line 512
[13-Mar-2019 09:29:14 UTC] PHP Notice:  Trying to get property 'user_email' of non-object in /site_path/wp-content/plugins/bp-better-messages/inc/functions.php on line 519
[13-Mar-2019 09:29:14 UTC] PHP Notice:  Trying to get property 'ID' of non-object in /site_path/wp-content/plugins/bp-better-messages/inc/functions.php on line 525

BP Better Messages 1.9.7.9
BuddyPress 4.2.0
WordPress 5.1.1
PHP 7.2.16-1+ubuntu16.04.1+deb.sury.org+1