Installation and server related problems

hello, 

There is something up with my server and I'm not sure how to trouble shoot. I'm hoping anyone can shed some light...

We have H5P activities that will not consistently load for students -- a teacher can see them, but the student cannot see it. If the teacher logs into Moodle on the students computer, then the activity can be seen. Once the teacher logs out, and the student logs into Moodle, the H5P activity can also be seen then. Some caching issue? 

I've attached the PHP errors shown on the latest version of Chrome (Mac 10.13)

 Hi! 

I'm trying to use h5p with moodle but I have a pronlem. I have moodle3.5.6 and H5P 1.19.1. When I use the hub, I have "loading in progress please wait and nothing else. Do you have an idea ? 

Thanks!

Hello: I'm a total newbie, trying to diagnose an issue on something that was created for us who is no longer available. h5p is running within Drupal. When someone with admin access went to edit a course presentation slide, she started to get an error message (on node=21). Now, we just keep getting error messages whenever we try to access or edit.