Fix "Allowed memory size" error in Wordpress

I am currently encountering an issue with my WordPress website that is showing an "Allowed Memory Size" error. I am looking for someone to help me fix this issue in its entirety so that my website is back and running as smoothly as possible. My goal for this project is to have the issue fixed and the website running with no more errors. Please let me know if you have any questions or need additional information from me.