Intentando usar Express JS con la aplicación React y PostgreSQL DB por primera vez, estoy siguiendo este tutorial , pero editando ligeramente para mi necesidad (almacenamiento de recetas). Actualmente recibo este error y no estoy seguro de por qué...

 TypeError: Cannot read properties of undefined (reading 'rows') at /Users/xx/Desktop/Programming/recipes/recipes/backend/node_postgres/recipe_model.js:16:23 at Query.callback (/Users/xx/Desktop/Programming/recipes/recipes/backend/node_postgres/node_modules/pg-pool/index.js:415:18) at Query.handleError (/Users/xx/Desktop/Programming/recipes/recipes/backend/node_postgres/node_modules/pg/lib/query.js:128:19) at Client._handleErrorMessage (/Users/xx/Desktop/Programming/recipes/recipes/backend/node_postgres/node_modules/pg/lib/client.js:335:17) at Connection.emit (node:events:526:28) at /Users/xx/Desktop/Programming/recipes/recipes/backend/node_postgres/node_modules/pg/lib/connection.js:114:12 at Parser.parse (/Users/xx/Desktop/Programming/recipes/recipes/backend/node_postgres/node_modules/pg-protocol/dist/parser.js:40:17) at Socket.<anonymous> (/Users/xx/Desktop/Programming/recipes/recipes/backend/node_postgres/node_modules/pg-protocol/dist/index.js:11:42) at Socket.emit (node:events:526:28) at addChunk (node:internal/streams/readable:315:12)

El código relevante de recipe_model.js

 const getRecipe = () => { return new Promise(function (resolve, reject) { pool.query('SELECT * FROM recipes ORDER BY id ASC', (error, results) => { if (error) { reject(error) } resolve(results.rows) }) }) }

Gracias por cualquier ayuda.