@I_am_eefje That errand has issues in the sense that the task does not update. If you read the popup text it tells you what to do, but the task does not reflect it. Basically after you sold the lettuce seeds, you need to talk to Agatha again and buy watermelons (not from the stall, but the sim herself, probably most clear to invite her over and talk to her). Then you need to sell those melons to four different sims. After you've done that, you still need to see Agatha and choose dialogue option 'celebrate with Agatha', then you both dance for a bit and the errand is finally over. The task stays on the lettuces the whole time.
