The answer to 'how to fix EV charger' is to first diagnose the issue. Check for any visible damage to the charger, its cord, or the connection to your electric vehicle. If everything looks intact, reset the charger by unplugging it from both the power source and your EV, waiting a minute, then reconnecting it. If the issue persists, you may need to reset the circuit breaker or GFCI that powers the charger.
If resetting the charger doesn't work, you may have an electrical issue that requires professional help. Attempting to repair the internal components of an EV charger yourself can be dangerous and is generally not recommended for homeowners. It's best to contact a licensed electrician who can properly diagnose and fix the problem.