JQL error when open Project Calendar

com.atlassian.jira.rest.client.api.RestClientException: [ErrorCollection{status=400, errors={}, errorMessages=[Error in the JQL Query: 'INT' is a reserved JQL word. You must surround it in quotation marks to use it in a query. (line 1, character 11)]}]
	at com.atlassian.jira.rest.client.internal.async.DelegatingPromise.claim(DelegatingPromise.java:47)
	at services.SearchServiceImpl.findIssues(SearchServiceImpl.java:61)
	at services.JiraCalendarFactory.create(JiraCalendarFactory.java:53)
	at servlets.IssueCalendarServlet.doGet(IssueCalendarServlet.java:54)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at com.atlassian.pluginkit.servlet.AbstractPageServlet.service(AbstractPageServlet.java:86)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at com.atlassian.pluginkit.servlet.LazyHttpServlet.service(LazyHttpServlet.java:51)
	at com.atlassian.plugin.remotable.plugin.loader.universalbinary.DelegatingUBServlet.service(DelegatingUBServlet.java:43)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at com.atlassian.plugin.remotable.plugin.loader.universalbinary.UBDispatchFilter$2.doFilter(UBDispatchFilter.java:211)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.remotable.host.common.service.AuthenticationFilter.doFilter(AuthenticationFilter.java:85)
	at com.atlassian.plugin.remotable.plugin.loader.universalbinary.DelegatingUBFilter.doFilter(DelegatingUBFilter.java:43)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.remotable.host.common.service.http.bigpipe.BigPipeRequestIdFilter.doFilter(BigPipeRequestIdFilter.java:33)
	at com.atlassian.plugin.remotable.plugin.loader.universalbinary.DelegatingUBFilter.doFilter(DelegatingUBFilter.java:43)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.remotable.plugin.loader.universalbinary.UBDispatchFilter.doFilter(UBDispatchFilter.java:220)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.atlassian.plugin.remotable.host.common.service.http.bigpipe.BigPipeRequestIdFilter.doFilter(BigPipeRequestIdFilter.java:33)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.atlassian.prettyurls.filter.PrettyUrlsCombinedMatchDispatcherFilter.doFilter(PrettyUrlsCombinedMatchDispatcherFilter.java:61)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.sysbliss.jira.plugins.workflow.servlet.JWDSendRedirectFilter.doFilter(JWDSendRedirectFilter.java:25)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.atlassian.jira.web.filters.steps.ChainedFilterStepRunner.doFilter(ChainedFilterStepRunner.java:78)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.atlassian.core.filters.cache.AbstractCachingFilter.doFilter(AbstractCachingFilter.java:33)
	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.atlassian.core.filters.encoding.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:41)
	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
	at com.atlassian.jira.web.filters.PathMatchingEncodingFilter.doFilter(PathMatchingEncodingFilter.java:49)
	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.atlassian.jira.startup.JiraStartupChecklistFilter.doFilter(JiraStartupChecklistFilter.java:74)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.atlassian.jira.web.filters.steps.ChainedFilterStepRunner.doFilter(ChainedFilterStepRunner.java:78)
	at com.atlassian.jira.web.filters.JiraFirstFilter.doFilter(JiraFirstFilter.java:57)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:776)
	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:705)
	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:898)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
	at java.lang.Thread.run(Thread.java:662)
Caused by: com.atlassian.jira.rest.client.api.RestClientException: [ErrorCollection{status=400, errors={}, errorMessages=[Error in the JQL Query: 'INT' is a reserved JQL word. You must surround it in quotation marks to use it in a query. (line 1, character 11)]}]
	at com.atlassian.jira.rest.client.internal.async.AbstractAsynchronousRestClient$2.apply(AbstractAsynchronousRestClient.java:166)
	at com.atlassian.jira.rest.client.internal.async.AbstractAsynchronousRestClient$2.apply(AbstractAsynchronousRestClient.java:160)
	at com.atlassian.httpclient.api.ResponsePromiseMapFunction.apply(ResponsePromiseMapFunction.java:48)
	at com.atlassian.httpclient.api.ResponsePromiseMapFunction.apply(ResponsePromiseMapFunction.java:12)
	at com.atlassian.util.concurrent.Promises$Of$3.apply(Promises.java:268)
	at com.atlassian.util.concurrent.Promises$2.onSuccess(Promises.java:158)
	at com.google.common.util.concurrent.Futures$7.run(Futures.java:1072)
	at com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:253)
	at com.google.common.util.concurrent.ExecutionList$RunnableExecutorPair.execute(ExecutionList.java:161)
	at com.google.common.util.concurrent.ExecutionList.execute(ExecutionList.java:146)
	at com.google.common.util.concurrent.AbstractFuture.done(AbstractFuture.java:235)
	at com.google.common.util.concurrent.AbstractFuture.set(AbstractFuture.java:172)
	at com.google.common.util.concurrent.SettableFuture.set(SettableFuture.java:53)
	at com.atlassian.util.concurrent.Promises$Of$3.apply(Promises.java:268)
	at com.atlassian.util.concurrent.Promises$2.onSuccess(Promises.java:158)
	at com.google.common.util.concurrent.Futures$7.run(Futures.java:1072)
	at com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:253)
	at com.google.common.util.concurrent.ExecutionList$RunnableExecutorPair.execute(ExecutionList.java:161)
	at com.google.common.util.concurrent.ExecutionList.execute(ExecutionList.java:146)
	at com.google.common.util.concurrent.AbstractFuture.done(AbstractFuture.java:235)
	at com.google.common.util.concurrent.AbstractFuture.set(AbstractFuture.java:172)
	at com.google.common.util.concurrent.SettableFuture.set(SettableFuture.java:53)
	at com.atlassian.httpclient.apache.httpcomponents.SettableFuturePromiseHttpPromiseAsyncClient$1$1.run(SettableFuturePromiseHttpPromiseAsyncClient.java:46)
	at com.atlassian.httpclient.apache.httpcomponents.SettableFuturePromiseHttpPromiseAsyncClient$ThreadLocalDelegateRunnable$1.run(SettableFuturePromiseHttpPromiseAsyncClient.java:197)
	at com.atlassian.httpclient.apache.httpcomponents.SettableFuturePromiseHttpPromiseAsyncClient.runInContext(SettableFuturePromiseHttpPromiseAsyncClient.java:90)
	at com.atlassian.httpclient.apache.httpcomponents.SettableFuturePromiseHttpPromiseAsyncClient$ThreadLocalDelegateRunnable.run(SettableFuturePromiseHttpPromiseAsyncClient.java:192)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	... 1 more