Error when processing HAR file


I’m a bit stuck in the situation, when I am not able to process the HAR file. Can you help me with this? Thanks.
I’ll attach also the HAR file:

Thanks for reporting.

IMHO, that’s a FireFox issue (malformed HAR) but we’ll cope with it.

Thanks for dealing with this. Indeed, it seems to be a malformed HAR from Firefox, because when I recorded using the proxy and Firefox, the script was generated with no issue.