The express.json() middleware, which is used to parse JSON-encoded request bodies, seems to be malfunctioning in our platform. Despite being implemented as app.use(express.json()), the application fails to interpret incoming JSON data, leading to unexpected behavior during request processing.

When attempting to connect Sequelize ORM to a PostgreSQL database, users may encounter difficulties if the required dependencies pg and pg-hstore are not installed. This results in an inability to establish a connection between Sequelize and PostgreSQL.

When attempting to install the mysql2 package, an error occurred indicating that manual installation is required. This issue impedes the installation process and may affect the functionality of the application that relies on this package. Further investigation and resolution are needed to successfully install the mysql2 package.

have not imported dbUrl variable

have not add packages mongodb