FAIL : unknown exception DEBUG : java.lang.Exception: unknown exception

I am having an issue when running my robot script. It is having an error on SikuliLibrary.

java.lang.Exception: unknown exception
at org.opencv.imgproc.Imgproc.matchTemplate_1(Native Method)
at org.opencv.imgproc.Imgproc.matchTemplate(Imgproc.java:2616)
at org.sikuli.script.Finder$Finder2.doFindMatch(Finder.java:733)
at org.sikuli.script.Finder$Finder2.doFindImage(Finder.java:704)
at org.sikuli.script.Finder$Finder2.doFind(Finder.java:622)
at org.sikuli.script.Finder$Finder2.find(Finder.java:582)
at org.sikuli.script.Finder.find(Finder.java:195)
at org.sikuli.script.Region.runFinder(Region.java:2797)
at org.sikuli.script.Region.doFind(Region.java:2751)
at org.sikuli.script.Region.access$200(Region.java:28)
at org.sikuli.script.Region$RepeatableFind.run(Region.java:2983)
at org.sikuli.script.Region$Repeatable.repeat(Region.java:2926)
at org.sikuli.script.Region.wait(Region.java:2196)
at com.github.rainmanwy.robotframework.sikulilib.keywords.ScreenKeywords.wait(ScreenKeywords.java:304)
at com.github.rainmanwy.robotframework.sikulilib.keywords.ScreenKeywords.waitUntilScreenContain(ScreenKeywords.java:329)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.robotframework.javalib.reflection.KeywordInvoker.invoke(KeywordInvoker.java:50)
at org.robotframework.javalib.beans.annotation.AnnotationKeywordExtractor$1.execute(AnnotationKeywordExtractor.java:62)
at org.robotframework.javalib.library.KeywordFactoryBasedLibrary.runKeyword(KeywordFactoryBasedLibrary.java:37)
at org.robotframework.javalib.library.AnnotationLibrary.runKeyword(AnnotationLibrary.java:81)
at com.github.rainmanwy.robotframework.sikulilib.SikuliLibrary.runKeyword(SikuliLibrary.java:40)
at com.github.rainmanwy.robotframework.sikulilib.SikuliLibrary.runKeyword(SikuliLibrary.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.robotframework.remoteserver.library.DynamicApiRemoteLibrary.runKeyword(DynamicApiRemoteLibrary.java:65)
at org.robotframework.remoteserver.servlet.ServerMethods.run_keyword(ServerMethods.java:90)
at org.robotframework.remoteserver.servlet.ServerMethods.run_keyword(ServerMethods.java:154)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.xmlrpc.server.ReflectiveXmlRpcHandler.invoke(ReflectiveXmlRpcHandler.java:115)
at org.apache.xmlrpc.server.ReflectiveXmlRpcHandler.execute(ReflectiveXmlRpcHandler.java:106)
at org.apache.xmlrpc.server.XmlRpcServerWorker.execute(XmlRpcServerWorker.java:46)
at org.apache.xmlrpc.server.XmlRpcServer.execute(XmlRpcServer.java:86)
at org.apache.xmlrpc.server.XmlRpcStreamServer.execute(XmlRpcStreamServer.java:200)
at org.apache.xmlrpc.webserver.XmlRpcServletServer.execute(XmlRpcServletServer.java:112)
at org.apache.xmlrpc.webserver.XmlRpcServlet.doPost(XmlRpcServlet.java:196)
at org.robotframework.remoteserver.servlet.RemoteServerServlet.doPost(RemoteServerServlet.java:122)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.robotframework.remoteserver.servlet.RemoteServerServlet.service(RemoteServerServlet.java:102)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:565)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:479)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1031)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:965)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
at org.eclipse.jetty.server.Server.handle(Server.java:348)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:452)
at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:894)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:948)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:851)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:77)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:606)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:46)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:603)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:538)
at java.lang.Thread.run(Unknown Source)

Environment Versions
Python 3.7.7
SikuliLibrary 1.0.8 (also tried latest version)
JDK/JRE 1.8.0_261

Start with the stack trace at org.opencv.imgproc.Imgproc.matchTemplate and the SikuliLibrary call sites ScreenKeywords.wait (line 304) and waitUntilScreenContain (line 329), then reproduce with the listed versions. The issue does not specify a desired change or acceptance condition, so a fix is not defined until the cause and expected behavior are established.