Not Able to fetch task api in camunda

Hi,
I’m not able to fetch count of the task as well as all the task from the engine rest API
Here are the logs

0-Sep-2020 11:06:37.049 WARNING [http-nio-8080-exec-20] org.camunda.bpm.engine.rest.exception.ProcessEngineExceptionHandler.toResponse org.camunda.bpm.engine.ProcessEngineException: Process engine persistence exception
at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.rethrow(CommandInvocationContext.java:151)
at org.camunda.bpm.engine.impl.interceptor.CommandContext.close(CommandContext.java:178)
at org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:116)
at org.camunda.bpm.engine.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:70)
at org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
at org.camunda.bpm.engine.impl.AbstractQuery.count(AbstractQuery.java:161)
at org.camunda.bpm.engine.rest.impl.TaskRestServiceImpl.queryTasksCount(TaskRestServiceImpl.java:143)
at org.camunda.bpm.engine.rest.impl.TaskRestServiceImpl.getTasksCount(TaskRestServiceImpl.java:134)
at sun.reflect.GeneratedMethodAccessor328.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:140)
at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:295)
at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:249)
at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:138)
at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:101)
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:406)
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:213)
at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:228)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.camunda.bpm.engine.rest.security.auth.ProcessEngineAuthenticationFilter.doFilter(ProcessEngineAuthenticationFilter.java:155)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.camunda.bpm.engine.rest.filter.CacheControlFilter.doFilter(CacheControlFilter.java:45)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.camunda.bpm.engine.rest.filter.EmptyBodyFilter.doFilter(EmptyBodyFilter.java:101)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:836)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1747)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.ibatis.exceptions.PersistenceException:
### Error querying database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after statement closed.
### The error may exist in org/camunda/bpm/engine/impl/mapping/entity/Task.xml
### The error may involve org.camunda.bpm.engine.impl.persistence.entity.TaskEntity.selectTaskCountByQueryCriteria
### The error occurred while handling results
### SQL: select count(distinct RES.ID_)            from ACT_RU_TASK RES                                                                                                                                                    left join ACT_RE_PROCDEF PROCDEF       on RES.PROC_DEF_ID_ = PROCDEF.ID_                                                              left JOIN (     SELECT A.*     FROM ACT_RU_AUTHORIZATION A     WHERE A.TYPE_ < 2          AND ( A.USER_ID_ in ( ?, '*')                        OR A.GROUP_ID_ IN  (  ? , ? , ? , ? )            )             AND (                  (             A.RESOURCE_TYPE_ = ? AND A.PERMS_ & ? = ?          OR            A.RESOURCE_TYPE_ = ? AND A.PERMS_ & ? = ?          )                        )             )                  AUTH ON (AUTH.RESOURCE_ID_ in (RES.ID_, PROCDEF.KEY_, '*'))                                     WHERE  (         1 = 1          )                                            and (           (RES.CASE_EXECUTION_ID_ IS NOT NULL)           OR           (AUTH.RESOURCE_ID_ IS NOT NULL)                        )
### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after statement closed.
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:150)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77)
at org.camunda.bpm.engine.impl.db.sql.DbSqlSession.selectOne(DbSqlSession.java:117)
at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.selectOne(DbEntityManager.java:189)
at org.camunda.bpm.engine.impl.persistence.entity.TaskManager.findTaskCountByQueryCriteria(TaskManager.java:149)
at org.camunda.bpm.engine.impl.TaskQueryImpl.executeCount(TaskQueryImpl.java:1311)
at org.camunda.bpm.engine.impl.AbstractQuery.evaluateExpressionsAndExecuteCount(AbstractQuery.java:183)
at org.camunda.bpm.engine.impl.AbstractQuery.execute(AbstractQuery.java:176)
at org.camunda.bpm.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:28)
at org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:107)
... 50 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after statement closed.
at sun.reflect.GeneratedConstructorAccessor92.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.Util.getInstance(Util.java:386)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1014)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:988)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:974)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:919)
at com.mysql.jdbc.StatementImpl.checkClosed(StatementImpl.java:463)
at com.mysql.jdbc.StatementImpl.getMoreResults(StatementImpl.java:2223)
at com.mysql.jdbc.StatementImpl.getMoreResults(StatementImpl.java:2216)
at sun.reflect.GeneratedMethodAccessor34.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.tomcat.jdbc.pool.interceptor.AbstractQueryReport$StatementProxy.invoke(AbstractQueryReport.java:210)
at com.sun.proxy.$Proxy4.getMoreResults(Unknown Source)
at sun.reflect.GeneratedMethodAccessor34.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.tomcat.jdbc.pool.StatementFacade$StatementProxy.invoke(StatementFacade.java:114)
at com.sun.proxy.$Proxy4.getMoreResults(Unknown Source)
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getFirstResultSet(DefaultResultSetHandler.java:239)
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:185)
at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:64)
at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79)
at org.apache.ibatis.executor.BatchExecutor.doQuery(BatchExecutor.java:93)
at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324)
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156)
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109)
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148)
... 60 more

Also here we had setup the server.xml file with the configuration for MySQL as

         <Resource name="jdbc/ProcessEngine"
              auth="Container"
              type="javax.sql.DataSource"
              factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
              uniqueResourceName="process-engine"
              driverClassName="com.mysql.jdbc.Driver"
              url="jdbc:mysql://XXXX:3306/camunda?autoReconnect=true"
              username="XXXX"
              password="XXXX"
              maxActive="20"
              minIdle="10" 
    		  testWhileIdle="true"
    		  testOnBorrow="true"
    		  testOnReturn="false"
    		  validationQuery="SELECT 1"
    		  validationInterval="30000"
    		  timeBetweenEvictionRunsMillis="30000"
    		  maxWait="10000"
    		  removeAbandonedTimeout="60"
    		  removeAbandoned="true"
    		  logAbandoned="true"
    		  minEvictableIdleTimeMillis="30000"
    		  connectionTimeout="300000"
    		  jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;
    							org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer;
    							org.apache.tomcat.jdbc.pool.interceptor.ResetAbandonedTimer"
    		  />

But still the same. Waiting for the response