#ERROR after a few mins of closing the sheet.

[chof64]

I am doing some API calls from a game server that I'm playing with. And I using a different sheet to pull API information, and another to parse and display the pulled information.

But after some time, when I pull the information from the API sheet, it returns an error, and when I check the sheet, the =importjson function returns an Error saying unknown function.

Is there a way or workaround to fix this?