The Google Search Console team has noted that data anomalies in the Accelerated Mobile Pages (AMP) report in Search Console occurred between January 23 and February 3.
Google wrote:
Some users may see elevated levels of errors of the type “Major content mismatch” due to a processing error on our side. Correct error counts should return to their actual levels within few days.
If you do see any “Major content mismatch” errors in those reports between those date ranges, check back again later in the week for corrected data.
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