Norton Eraser Error

Hey guys, last night while I've been browsing some suspicious pop-up has appeared on my screen and this warning came along from norton security:

I clicked on OK and then sadly the scan failed to complete with this error message:

the advanced details of the threat detected by norton was as follows:

despite I've ran full scan for multiple times then after and no threat was detected by norton, but I'm scared that the security of my pc is compromised somehow by this trojan attack. Please help me how can I get fully sure that no harm was done.

I honestly appreciate your consideration and likely solutions,