fs.writeFile() and fs.readFile() not working properly in ESP32

I've recently encountered this problem, in which I sometimes try to save some data (come configurations, no more than 100 characters in total) in a file using this function fs.writeFile(), but after like 2 or 3 tries, it just stop working, and the function returns false every time...

I also tried to use the E.openFile() and File.close() pattern, but sadly I'm getting the same results. Does anyone else have this problem? I'm using firmware version 1.95 btw