huge glitch that's not leaving me alon

i closed my project to go chill, but when i came back my entire project became… i don’t know what it has become! my character is look weird and the map is invisible and my weapon is translucent with a blue tone!

opened a new project and it happened again

OK I FIXED IT! The config file keeps glitching and ruining everything. All u do is take a config file from another game and replace it with the corrupt config file!