PyQGIS standalone app processing with selectbylocation not working

Question

I'm trying to run processing with selectbylocation in standalone app, everything seems to run fine but the output I'm getting is the main layer always, so it's not really working. And I have no idea how to make it raise an error.

def select_by_location(main_layer, chosen_layer):

    parameters = {
        "INPUT": main_layer,
        "INTERSECT": chosen_layer,
        "METHOD": 0,
        "PREDICATE": [0],
        "OUTPUT": "TEMPORARY_OUTPUT",
    }
    result = processing.runAndLoadResults("qgis:selectbylocation", parameters)['OUTPUT']
    return result
    
qgs = core.QgsApplication([], False)
qgs.initQgis()
Processing.initialize()
result = select_by_location(main_layer, layer)
path = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'test_new')
core.QgsVectorFileWriter.writeAsVectorFormat(result, path, "UTF-8", driverName="GPKG")
qgs.exitQgis()

Answer 1

Solved the issue by changing the algorithm to "Extract by location" and for feedback found:

 feedback = core.QgsProcessingFeedback()

as well as keep in mind that the location you initialize processing in your code is important.