HAR file (abreviation for HTML archive) is a tool how to analyze software errors. It is a record of operations that happen in Google Chrome when a user is performing what appears to be a problematic action. 

Getting HAR file

Below are two options how to record HAR file. First is video for MAC  Os users:

 Secondly option for Windows Google Chrome users:

In Chrome, go to the page where you want to record the HAR file.

 - Open Developer Tools (Inspect)

    - Press CTRL + SHIFT + I (letter i) or follow steps b and c.

    - Click the Chrome menu, three dots in the upper right corner of the browser window ⋮

    - Select Mote tools> Developer tools for developers)

 - Start capturing your screen via this free Google Chrome plugin - link HERE 

 - Click the Network tab.

 - Check theat the top Perserve log.

 - A red circle appears at the top left of the Network tab. This means that the recording started. If the circle is black, click the black circle to start recording activity in the browser.

 - Refresh the page  (F5 / refresh) and repeat the problem while recording is active.

 - After the problem reproduces successfully, right-click any row of the activity pane and select Save as a HAR with content.

 - Select thetab Console 

 - Right-click the panel and select Save as ...

 - Name the log file Chrome-console.log.

 - In the ticket (or email thread) where we communicate, please send us both files - HAR file and screen capture for further investigation.