Bahmni Lab- I get an error when i click on the Print icon to print lab results

After lab results are entered clicking on the print icon to print the lab result gives an error showing the image below. I need your help

Bahmni-Lab log

2018-10-06 13:22:10,227 WARN [ELIS][ValidatorResources] Form ‘LabDashboardForm’ not found for locale ‘en_US’ 2018-10-06 13:22:20,023 WARN [ELIS][ValidatorResources] Form ‘ReportForm’ not found for locale ‘en_US’ 2018-10-06 13:22:20,024 WARN [ELIS][RequestProcessor] Unhandled Exception thrown: class java.lang.NullPointerException 2018-10-06 13:22:20,024 ERROR [ELIS][OpenElisRequestFilter] Exception in request javax.servlet.ServletException: java.lang.NullPointerException at org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:523) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194) at us.mn.state.health.lims.common.servlet.LimsActionServlet.doGet(LimsActionServlet.java:127) at javax.servlet.http.HttpServlet.service(HttpServlet.java:618) at javax.servlet.http.HttpServlet.service(HttpServlet.java:725) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at us.mn.state.health.lims.common.util.OpenElisRequestFilter.doFilter(OpenElisRequestFilter.java:40) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:534) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1081) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658) at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.NullPointerException Oct 06, 2018 1:22:20 PM org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet [action] in context with path [/openelis] threw exception [java.lang.NullPointerException] with root cause java.lang.NullPointerException

I found a solution by logging in with a different language and then switching it back to English