Kaspersky script injection is breaking SPA web applications (value.toString is not a function)

[iFL]

Hello, we got many reports from different users using Kaspersky antivirus that our website is not working for them. When we tried to replicate it, we found out that it is broken by JavaScript error (value.toString is not a function) thrown by script injected by Kaspersky. 

It is happening when our web is trying to get data from server using browser fetch API. Sharing screenshot with the error and line in script where the error is thrown.

Can you please check / fix this issue?

Thank you,

Fero

Edited 4 hours ago by iFL
update description

[Flood and Flood's wife]

2 hours ago, iFL said:

Hello, we got many reports from different users using Kaspersky antivirus that our website is not working for them. When we tried to replicate it, we found out that it is broken by JavaScript error thrown by script injected by Kaspersky. 

It is happening when our web is trying to get data from server using browser fetch API. Sharing screenshot with the error and line in script where the error is thrown.

1. Can you please check / fix this issue?

 

Hello @IFL, Fero, 

Welcome!

• Read before you create a new topic! by Danila T.
• As a *test only*, do the issues resolve, IF, in the Kaspersky application, Network Settings, "Inject script into web traffic to interact with web pages", is unchecked?

1. Please log a request with Kaspersky Customer Service,   - on the support page, select either Chat or Email, & fill in the template as shown, also select (your) Kaspersky application (A); please include a *detailed history*. Support may request logs, traces & other data, they will guide you: How to collect console and HAR logs, GSI. 
2. *Also* -> IF using Chat - *before* ending the chat -> ask the operator to email (you) a copy of the chat transcript - otherwise (you'll) have no record of the chat*

Please share the outcome with the Community, when it's available? 
Thank you🙏
Flood🐳+🐋

Edited 2 hours ago by Flood and Flood's wife
pn