Failed to configure a DataSource url attribute is not specified and no embedded datasource could be configuredReason Failed to determine a suitable driver class

for the URL.

This error occurs when Spring Boot application is not able to configure the DataSource for accessing the database. The 'url' attribute is not specified in the application's configuration file, and Spring Boot is not able to determine a suitable driver class for the URL.

To resolve this error, you need to specify the 'url' attribute in the application's configuration file, along with other necessary properties like username, password, driver class, etc. You can also check if the required database driver is present in the classpath of the application.

Here is an example of a configuration file for a MySQL database:

spring.datasource.url=jdbc:mysql://localhost:3306/mydatabase spring.datasource.username=root spring.datasource.password=password spring.datasource.driver-class-name=com.mysql.jdbc.Driver

Make sure to replace the values of 'url', 'username', 'password', and 'driver-class-name' with the appropriate values for your database