A mistake occured when runing geemap in jupyter lab

A mistake occured when extracting NDVI and plotting trendlines with Sentinel 2, running S2_chart = ui.Chart.image.series() gives an error saying ui. is not defined.
I’m using Windows, Python 3.12.3, ipygee-Version: 0.0.18, geetools-Version: 1.3.0, jupyeter lab extension manager is also active, lab-version3.0 and note book-version6.5.4. version6.5.4


Thanks for your attention very much!