Web Application Shutting down due to async job

[mwm1]

Dear all,
When I try to start the application Activiti Explorer, I have got the following error:

[localhost-startStop-1] INFO  org.springframework.beans.factory.config.PropertyPlaceholderConfigurer  - Loading properties file from class path resource [ui.properties]
 [localhost-startStop-1] INFO  org.activiti.engine.impl.ProcessEngineImpl  - ProcessEngine default created
 [localhost-startStop-1] INFO  org.activiti.engine.impl.asyncexecutor.DefaultAsyncJobExecutor  - Starting up the default async job executor [org.activiti.engine.impl.asyncexecutor.DefaultAsyncJobExecutor].
 [localhost-startStop-1] INFO  org.activiti.engine.impl.asyncexecutor.DefaultAsyncJobExecutor  - Creating thread pool queue of size 100
 [localhost-startStop-1] INFO  org.activiti.engine.impl.asyncexecutor.DefaultAsyncJobExecutor  - Creating executor service with corePoolSize 2, maxPoolSize 10 and keepAliveTime 5000
 [Thread-4] INFO  org.activiti.engine.impl.asyncexecutor.AcquireTimerJobsRunnable  - {} starting to acquire async jobs due
 [Thread-5] INFO  org.activiti.engine.impl.asyncexecutor.AcquireAsyncJobsDueRunnable  - {} starting to acquire async jobs due
 [localhost-startStop-1] INFO  org.activiti.explorer.conf.DemoDataConfiguration  - Initializing demo groups
 [localhost-startStop-1] INFO  org.activiti.explorer.conf.DemoDataConfiguration  - Initializing demo users
 [localhost-startStop-1] INFO  org.activiti.engine.impl.asyncexecutor.DefaultAsyncJobExecutor  - Shutting down the default async job executor [org.activiti.engine.impl.asyncexecutor.DefaultAsyncJobExecutor].
 [Thread-4] INFO  org.activiti.engine.impl.asyncexecutor.AcquireTimerJobsRunnable  - {} stopped async job due acquisition
 [Thread-5] INFO  org.activiti.engine.impl.asyncexecutor.AcquireAsyncJobsDueRunnable  - {} stopped async job due acquisition
Dec 01, 2015 11:53:20 AM org.apache.catalina.core.StandardContext startInternal
SEVERE: Error listenerStart
Dec 01, 2015 11:53:20 AM org.apache.catalina.core.StandardContext startInternal
SEVERE: Context [/activiti-explorer] startup failed due to previous errors
11:53:20,053 [localhost-startStop-1] INFO  org.activiti.explorer.servlet.WebConfigurer  - Destroying Web application ‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

The engine properties are:

# demo data properties
create.demo.users=true
create.demo.definitions=false
create.demo.models=false
create.demo.reports=false

# engine properties
engine.schema.update=true
engine.activate.jobexecutor=false
engine.asyncexecutor.enabled=true
engine.asyncexecutor.activate=true
engine.history.level=full

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[martin_grofcik]

Is there any other exception in the log (may be in another log file)?

Regards
Martin

[mwm1]

Thank you all or your resply.
I solved the problem.
The postgres JDBC driver was corrupted.
Now the application is running well.
Best regards