roles/weblate/templates/.env.j2

 APP_MAIN_PORT={{ app_main_port }}
+APP_VERSION={{ app_version }}

roles/weblate/vars/main.yml

 ---
-# vars file for cvat
+# vars file for weblate
 
-app_program: "cvat"
\ No newline at end of file
+app_program: "weblate"
\ No newline at end of file