Reproduction of error with Cypress running app with pdfnetjs viewer running in iframe

Steps to set up

Run npm install
Run npm run start to run the development server

App runs on http:https://localhost/4200.

Visiting app in browser will display a PDF file.

Running Cyprus tests:

The first test visiting app root causes an "Uncaught SyntaxError: Invalid or unexpected token" to be thrown in console and PDF will not display.

The second test going direct to the pdf viewer that is iframed in app is successul as error not thrown when viewer not iframed