This message indicates that scanners insights are unavailable due to a low number of jobs that were found in the scanner for the previous month.
In other words, if your scanner filters are very strict or the search query contains grammatical mistakes, the average amount of jobs per month could not be enough for analysis and, as a result, generate insights.
To resolve this, highly recommended to double-check your current filters (if all of them are relevant to your search request) and search query (improve it, remove grammar mistakes, or simplify it).