Ao conectar no localhost:8080/h2-console inserir o endereço no JDBC URL, acontece o erro: Database "mem:alura-forum" not found, and IFEXISTS=true, so we cant auto-create it [90146-199] 90146/90146 (Ajuda).
insira seu código aqui
# datasource
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.url=jdbc:h2:mem:alura-forum
spring.datasource.username=sa
spring.datasource.password=
# jpa
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
spring.jpa.hibernate.ddl-auto=update
# h2
spring.h2.console.enabled=true
spring.h2.console.path=/h2-console
