I’ve been getting this warning in my console after adding a small 1 row pivot table to my dashboard

The wrapper height of the pivot table has not been set or is suspiciously small. This might cause pivot table rendering issues. If so, please set an appropriate height for the wrapper. Use document.getElementById("01f552c1a76f449eac70160492e2848b") to find the PivotTable element in the DOM, which will help you to identify its wrapper.

what would be the best way for me to handle this?

You should be able to follow the steps in the following articles: https://sdk.gooddata.com/gooddata-ui/docs/7.5.0/pivot_table_component.html#maximum-height