I had recently bought a dji fpv drone boy it didn’t come with the goggles. I was able to fly it the first couple times, but afterwards it started to flash red to yellow and doesn’t do anything when I put both stick outward then in. Is there any way to fix this issue

In the manual you will find what it means:
Compass calibration required

https://dl.djicdn.com/downloads/ ... _User_Manual_EN.pdf

But be careful, I noticed that with poor visibility (night) or with the glasses off, this error is common even if it has nothing to do with the compass.