A video creative was detected serving in your line item.
Step 1: Check which ad unit is flagged as a video line item.
Step 2: If the ad unit is a spot where you allow videos, you may ignore this error.
Step 3: If the ad unit should not be serving video ads, click the link to see which line item is serving it.
Step 4: Once the source is identified, log into the Bidder/Ad Network UI to block it or reach out to the ad representative – whichever is applicable.