FYI,
Here’s what I provided the OP with:
It worked on my raspberry pi 3 
For the demo, the server was just read the input data file every few seconds, but the final version should of course probably get the new data via a POST request or some other way (perhaps directly embedding the data acquisition module directly inside the server?)
And also it could use some nicer front-end
(And some nice CSS)
Anyways…