Can you provide details? Have you tried the simple approach of resetting all parameters to defaults? Does it happen with only one model or all? Does the model slicer correctly?
It’s hard to offer help without more data. However, if your print head is moving and no filament is coming out, that means filament is not reaching the nozzle. Did you try to reload it? Are you getting a successful purge on startup?
Forum Tip: If you make the effort to provide a detailed post, you’ll be rewarded with quality answers.