I suspect that you have the same problem like in this other post. Since it is not 100% duplicate I will post this again:

There is a known issue in the pg module and NodeJS 14.

The proposed solution is to make sure you have pg>=8.0.3 installed.

This can be done by updating pg in the dependencies.

Also make sure, that any other library depending on the pg module, is also up to date and has the latest pg version.

If this is not be possible for any reason - using Node 12 should also work.

I suspect that you have the same problem like in this other post. Since it is not a 100% duplicate I will post this again:

There is a known issue in the pg module and NodeJS 14.

The proposed solution is to make sure you have pg>=8.0.3 installed.

This can be done by updating pg in the dependencies.

Also make sure, that any other library depending on the pg module, is also up to date and has the latest pg version.

If this is not possible for any reason - using Node 12 should also work.