Failure of Web Server bridge:
No backend server available for connection: timed out after 30 seconds or idempotent set to OFF or method not idempotent.
Your PC is vulnerable to the infamous "WannaCry" ransomware worm which uses an attack known as "DoublePulsar". The affected PC is running an old version of Windows File and Printer Sharing which contains a serious bug. Attackers can infect your PC over the network without your knowledge and install malware remotely. This is what enabled the WannaCry (WanaCrypt0r) ransomware to infect thousands of computers worldwide on May 12th, 2017.
Follow the instructions in Solution to solve this issue and prevent WannaCry and further threats of this nature from infecting your PC.
To solve this problem, immediately install the MS17-010 security update on the affected system. Select your Windows version to view further instructions on how to fix the problem: