Timing out while editing a file via API?

Hello, In a project I am currently developing,I create a json file on a cpanel account using a reseller user. I then edit that json file periodically using API, I will add/edit/remove text from that file. The problem is, while editing that file randomly it will go blank, I am not sure if this is related to cPanel API or an issue with my coding. SO, to my question, does cPanel API or server configuration has any kind of limits that may affect me editing my files via API? Thank You