def getCRPlayers(fld):
layers = QgsProject().instance().mapLayers()
actualayers = []
found = False
for key, layer in layers.items():
fld_index = layer.fields().lookupField(fld)
if fld_index >= 0:
actualayers.append(layer)
found = True
if not found:
msg = "Field " + fld + " not in attribute table"
raise Exception(msg)
return actualayers
