I have just purchased the lost mine of phandelver module, and the goblin ambush map is blank and named ' random battle map' and only loads a blank map, while all the other maps appear to be fine. I am using google chrome 66.0.3359.181and macOS high sierra v10.13.3. Javascript is enabled, I am not using anti virus software. my enabled browser extensions include adblock, google drive, honey, last pass, momentum, ookla, zotero and ebay, none of which have affected anything before, Please see trhe attached image for the error Thank you for your help, Jordan