App Version: 64.0.3282.59 beta
iOS Version:10.3.3, 11.0.1
Device : iPhones
Url : https://newspaper.jaguarpaw.co.uk/

Steps to reproduce : 
1. Launch chrome.
2. Goto “https://newspaper.jaguarpaw.co.uk/”
3. Enter any text in the Newspaper field and Headline.
4. Tap on Make it.
5. Tap on Open In at the bottom.

Observed results:
The file could not be downloaded at this time error is displayed

Expected results:
Share screen should be displayed. 

Number of times you were able to reproduce: 5/5
Bug reproducible after clean install: Yes
Bug reproducible after clearing cache and cookies: Yes
Bug reproducible on Chrome Mobile on Android: NA
Bug reproducible on Dolphin/Safari/Firefox: Safari : NA
Bug reproducible on current stable build (App Version, iOS Version): Yes in M63
Bug reproducible on the current beta channel build (App Version, iOS Version): Yes in M64

Link to video :
https://drive.google.com/file/d/1HzEuY6WnRnsnO5jdtdfufYyrCWDiq2Ma/view?usp=sharing