How can I fix a leaking pipe under the sink?

To fix a leaking pipe under the sink, you can start by turning off the water supply, placing a bucket under the leak how to fix a burst pipe; https://boilerrepair-glasgow.co.uk/, catch any water, and then tightening the connections with a wrench.
If the leak persists, you may need to replace the pipe or use plumber’s tape to seal the leak.