Error developing search for database

https://www.wix.com/corvid/example/search Hello!

I did the search exactly following the example, but it does not work. Please help me, very urgently needed!

Thank you in advance

import wixData from "wix-data";

$w.onReady(() => {
  loadContinents();
});

let lastFilterSpecies;
let lastFiltergenomeComposition;
let debounceTimer;
export function iSpecies_keyPress(event, $w) {
 if (debounceTimer) {
    clearTimeout(debounceTimer);
    debounceTimer = undefined;
  }
  debounceTimer = setTimeout(() => {
    filter($w('#iSpecies').value, lastFilterSpecies);  
  }, 500);
}

export function iGenome_change(event) {
  filter(lastFilterSpecies, $w('#iGenome').value); 
}

function filter(species, genomeComposition) {
 if (lastFilterSpecies !== species || lastFiltergenomeComposition !== genomeComposition) {
 let newFilter = wixData.filter();
 if (species)
      newFilter = newFilter.contains('articleTitle', species);
 if (genomeComposition)
      newFilter = newFilter.contains('genomeComposition', genomeComposition);
    $w('#Gemini').setFilter(newFilter);   
    lastFilterSpecies = species; 
    lastFiltergenomeComposition = genomeComposition;
  }
}

function loadContinents() {
  wixData.query('Continents')
    .find()
    .then(res => {
 let options = [{"value": '', "label": 'All Continents'}];
      options.push(...res.items.map(continent => {
 return {"value": continent.title, "label": continent.title};
      }));
      $w('#iGenome').options = options;
    });

}


export function iSpecies_change(event) {
 //Add your code for this event here: 
}

export function iSpecies_keyPress_1(event) {
 //Add your code for this event here: 
}


function toggleFold(index) {
 let $fold = $w('#fold' + index);
 let $arrowDown = $w('#arrowDown' + index);
 let $arrowRight = $w('#arrowRight' + index);
 // toggle the fold at the index
 if ($fold.collapsed) {
    $fold.expand();
    $arrowDown.show();
    $arrowRight.hide();
  }
 else {
    $fold.collapse();
    $arrowDown.hide();
    $arrowRight.show();
  }
 // collapse the other folds
  [1,2,3,4]
    .filter(idx => idx !== index)
    .forEach(idx => {
      $w('#fold' + idx).collapse();
      $w('#arrowDown' + idx).hide();
      $w('#arrowRight' + idx).show();
    })
}