Add multiple Unique drop downs to a code

Well done! :stuck_out_tongue_winking_eye:

export function searchButton_click(event, $w) {
   $w("#trainingDataset").setFilter(wixData.filter()
      .contains("ppl", $w("#myDropdown1").value)
      .contains("muscleGroup", $w("#myDropdown2").value)  
      .contains("exerciseType", $w("#myDropdown3").value)  
      .contains("equipmentType", $w("#myDropdown4").value))    

   .then((results) => {console.log("Data Is Now Filtered: ");
      console.log(results.items)
      $w("#listRepeater").data = results.items;
   })
   .catch((err) => {console.log(err);});
   $w("#listRepeater").expand();
}
TypeError: Cannot read property 'items'ofundefined

Results not ready at this moment?

What do you get for: console.log(results.items)
Accepted-REPEATER-DATA-FORMAT =

[
  {
    "_id": "1",
    "firstName": "John",
    "lastName": "Doe",
  },
  {
    "_id": "2",
    "firstName": "Jane",
    "lastName": "Doe",
  }
]

Compare your CONSOLE-OUTPUT with this data-format.
Use the google-chrome-CONSOLE instead of the integrated Wix-CONSOLE.
(Press F-12 and navigate to CONSOLE).