This is a common attempt to find out if the administrative web interface installed on the site exists. Itβs normal for any website to receive such attempts from time to time.
If this is a traffic log, this attempt did not bring any success, since all requests led to HTTP 404. If this is just an error report, you should look at the traffic log to find out if this IP address did not result in a 404 response.
However, just because such an attemt would find the web interface that it was looking for does not mean that it was hacked. This means that someone knows which web interface you are using and may try to find a security weakness in it. As a rule, there is very little risk for this if the system is correctly updated and corrected.
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