fix code igniter code error and other tasks

please only bid if you have code igniter expertise and ideally have done somethin with PHP Travels

getting a error 500 when going to http://edelo.co

this is from the log:
[01-Apr-2021 03:14:07 UTC] PHP Fatal error: Call to a member function result() on boolean in /home/edeloco/public_html/application/modules/Property/models/Property_model.php on line 1163

This project if done well will lead on to the next stage of this project which is Ical importing and exporting.