# Error al intentar conectarme a mi base de datos usando un conector: "Error creating SQL Model Connection to database (Error: Invalid driver definition JAR list not defined)"

**URL:** <https://community.ofelia.com/t/error-al-intentar-conectarme-a-mi-base-de-datos-usando-un-conector-error-creating-sql-model-connection-to-database-error-invalid-driver-definition-jar-list-not-defined/11478>\
**Category:** Q&A\
**Created:** [7 February 2023 15:37 UTC](https://community.ofelia.com/t/error-al-intentar-conectarme-a-mi-base-de-datos-usando-un-conector-error-creating-sql-model-connection-to-database-error-invalid-driver-definition-jar-list-not-defined/11478 "2023-02-07T15:37:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![thalia.cruz](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ofelia.com/thalia.cruz/32/1230_2.png) [@thalia.cruz](https://community.ofelia.com/u/thalia.cruz)\
**Post date:** [7 February 2023 15:37 UTC](https://community.ofelia.com/t/error-al-intentar-conectarme-a-mi-base-de-datos-usando-un-conector-error-creating-sql-model-connection-to-database-error-invalid-driver-definition-jar-list-not-defined/11478/1 "2023-02-07T15:37:19Z")

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Al intentar conectarme a mi base de datos usando un conector, la conexión falla indicando el siguiente error "Error creating SQL Model Connection to database (Error: Invalid driver definition JAR list not defined)"&nbsp;  
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En los logs de Bonita Engine ve lo siguiente:&nbsp;  
  
`ExecuteConnectorOfActivity: flowNodeInstanceId = 3, connectorDefinitionName = france-destinations-db-connector failed.`

`The element will be marked as failed. Exception is: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver`

`wrapped by org.bonitasoft.engine.connector.ConnectorException: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
wrapped by org.bonitasoft.engine.connector.exception.SConnectorException: org.bonitasoft.engine.connector.ConnectorException: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
wrapped by org.bonitasoft.engine.commons.exceptions.SBonitaRuntimeException: git@github.com:Bonitasoft-Community/train-ticket-example.git exception was generated here: at
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1412) at
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1220) at
org.bonitasoft.engine.classloader.BonitaClassLoader.loadClass(BonitaClassLoader.java:129) `  
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Qué está pasando?

Cómo puedo solucionarlo?

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<div class="post-metadata">

**Author:** ![thalia.cruz](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ofelia.com/thalia.cruz/32/1230_2.png) [@thalia.cruz](https://community.ofelia.com/u/thalia.cruz)\
**Post date:** [7 February 2023 16:03 UTC](https://community.ofelia.com/t/error-al-intentar-conectarme-a-mi-base-de-datos-usando-un-conector-error-creating-sql-model-connection-to-database-error-invalid-driver-definition-jar-list-not-defined/11478/2 "2023-02-07T16:03:41Z")

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Este error indica que el JAR necesario para utilizar este conector no se encuentra en el proyecto.

Esto se puede confirmar&nbsp;en Configurar&nbsp;\> Java dependencies&nbsp;

 ![](https://europe1.discourse-cdn.com/flex013/uploads/community_bonitasoft/original/1X/8df2c1e46f17dd9d6e0cebd81cf18c2882ce3731.png)

Para arreglar este problema:

1. Selecciona el jar que aparece en error
2. Da clic en "Remove"
3. Agrega de nuevo el conector. Esta vez usando el editor de texto.
4. Da clic en "Siguiente"&nbsp;en todas las etapas. Así forzarás que la dependencia se agregue de nuevo correctamente.
5. Confirma que los JARs han sido agregados correctamente&nbsp;en&nbsp;Configurar&nbsp;\> Java dependencies.

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