Topic on Extension talk:MassMessage

What's wrong with the file?

$ cat test.txt

User:Test

$ php sitename/extensions/MassMessage/maintenance/sendMessages.php --pagelist test.txt --subject test.txt --message test.txt

test.txt is empty, must have some content.

MediaWiki 1.36.1, PHP 7.4.15 (cgi-fcgi), MySQL 5.7.28-log, ICU 60.2, Apache 2.4.29-1ubuntu4.16

Extensions: Echo – (1a15ef8), VisualEditor 0.1.2, MyVariables 3.5.1, NoTitle 0.4.0 (780dbb6), DynamicSidebar 1.1 (b2f3feb), Lockdown – (2409546), MassMessage0.4.0 (c9b6e87) 19:21, 22 July 2021

Update:

$ ln -s test.txt test1.txt
$ ln -s test.txt test2.txt
$ php sitename/extensions/MassMessage/maintenance/sendMessages.php --pagelist test.txt --subject test1.txt --message test2.txt
test.txt is empty, must have some content.