When you try to open any page other than localhost, an error is thrown, how so?

Question

Yii

Moved to 16.04 and installed lamp.
When trying to open any page in yii1 other than localhost, an error is thrown, what could be wrong? There is nothing in the logs of yii itself. At the root is .htaccess. In /etc/apache2/sites-available/000-default.conf added:
AllowOverride All

Answer 1

www.yiiframework.com/doc/guide/1.1/ru/quickstart.a...
Here the problem is not in yii, but in Apache most likely