Deploy Heroku

Olá,

Fiz o deploy no Heroku de uma aplicação Spring MVC com Thymeleaf e Spring JPA. Quando é feito o deploy ela funciona sem problemas, mas depois que a máquina faz o stop e o start (estou utilizando os recursos free para testes), não consigo mais acessar, acusando erro do JDBC.

… 111 more

2019-12-04T19:22:46.785525+00:00 app[web.1]: Caused by: java.sql.SQLException: No suitable driver

2019-12-04T19:22:46.785526+00:00 app[web.1]: at java.sql.DriverManager.getDriver(DriverManager.java:315)

2019-12-04T19:22:46.785528+00:00 app[web.1]: at org.apache.commons.dbcp2.BasicDataSource.createConnectionFactory(BasicDataSource.java:2145)

2019-12-04T19:22:46.785529+00:00 app[web.1]: … 116 more

2019-12-04T19:22:46.785530+00:00 app[web.1]:

2019-12-04T19:22:46.785906+00:00 app[web.1]: Dec 04, 2019 7:22:46 PM org.apache.catalina.core.StandardContext startInternal

2019-12-04T19:22:46.785909+00:00 app[web.1]: SEVERE: One or more listeners failed to start. Full details will be found in the appropriate container log file

2019-12-04T19:22:46.792899+00:00 app[web.1]: Dec 04, 2019 7:22:46 PM org.apache.catalina.core.StandardContext startInternal

2019-12-04T19:22:46.792902+00:00 app[web.1]: SEVERE: Context [] startup failed due to previous errors

2019-12-04T19:22:46.796316+00:00 app[web.1]: SEVERE: Context [] failed in [org.apache.catalina.core.StandardContext] lifecycle. Allowing Tomcat to shutdown.

2019-12-04T19:22:46.798452+00:00 app[web.1]: Dec 04, 2019 7:22:46 PM org.apache.catalina.core.ApplicationContext log

2019-12-04T19:22:46.798455+00:00 app[web.1]: INFO: Closing Spring root WebApplicationContext

2019-12-04T19:22:46.805921+00:00 app[web.1]: Dec 04, 2019 7:22:46 PM org.apache.catalina.deploy.NamingResourcesImpl cleanUp

2019-12-04T19:22:46.805926+00:00 app[web.1]: WARNING: Failed to retrieve JNDI naming context for container [StandardEngine[Tomcat].StandardHost[localhost].StandardContext[]] so no cleanup was performed for that container

2019-12-04T19:22:46.805928+00:00 app[web.1]: javax.naming.NamingException: No naming context bound to this class loader

Alguém já passou por isso?

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