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

org.opencv.imgproc.Imgproc.matchTemplate のスタックトレースと、SikuliLibrary の呼び出し箇所である ScreenKeywords.wait (304 行目) および waitUntilScreenContain (329 行目) から始め、記載されているバージョンで再現してください。issue では望ましい変更や受け入れ条件が指定されていないため、原因と期待される動作が確立されるまでは fix は定義されません。

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