The problem has nothing to do with php environment.
Firstly, you should check if the Varnish HTTP Cache is supported by your hosting provider and if so, you may experience an issues like this on a shared hosting service in a virtualized environment. Second, you should check the path of your moodledata directory.
This two problems are commonly related to each other and together, they prevent images or other data to be displayed.
i am experiencing the same problem with moodle 3.2 and 3.2.1+ after . No images are shown in courses and quizzes as described by the others. I even made a new installation of moodle 3.2.1+ but images did not appear.
My hosting provider is bluehost. 1 month ago there was no problem (php 5.6 moodle 3.2) . Now i have tested with php 5.6 and php7 with no success.
The path of moodledata directory is correct. Also Varnish HTTP Cache is supported ( image from moodle> admin > server > enviroment)
Any ideas how to fix it ? thanks
