Dear Community!
So here is the error which I get very frequently. Sometimes when I get this error, the item’s outputs are empty
2018-04-11 19:07:52.098 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - transformation throws exception [transformation=org.eclipse.smarthome.transform.map.internal.MapTransformationService@11152b2, value=-]
org.eclipse.smarthome.core.transform.TransformationException: An error occurred while opening file.
at org.eclipse.smarthome.transform.map.internal.MapTransformationService.internalLoadTransform(MapTransformationService.java:66) [227:org.eclipse.smarthome.transform.map:0.10.0.b1]
at org.eclipse.smarthome.transform.map.internal.MapTransformationService.internalLoadTransform(MapTransformationService.java:1) [227:org.eclipse.smarthome.transform.map:0.10.0.b1]
at org.eclipse.smarthome.core.transform.AbstractFileTransformationService.transform(AbstractFileTransformationService.java:134) [118:org.eclipse.smarthome.core.transform:0.10.0.b1]
at org.eclipse.smarthome.ui.internal.items.ItemUIRegistryImpl.transform(ItemUIRegistryImpl.java:462) [155:org.eclipse.smarthome.ui:0.10.0.b1]
at org.eclipse.smarthome.ui.internal.items.ItemUIRegistryImpl.getLabel(ItemUIRegistryImpl.java:386) [155:org.eclipse.smarthome.ui:0.10.0.b1]
at org.eclipse.smarthome.ui.basic.internal.render.AbstractWidgetRenderer.preprocessSnippet(AbstractWidgetRenderer.java:118) [205:org.eclipse.smarthome.ui.basic:0.10.0.b1]
at org.eclipse.smarthome.ui.basic.internal.render.TextRenderer.renderWidget(TextRenderer.java:42) [205:org.eclipse.smarthome.ui.basic:0.10.0.b1]
at org.eclipse.smarthome.ui.basic.internal.render.PageRenderer.renderWidget(PageRenderer.java:172) [205:org.eclipse.smarthome.ui.basic:0.10.0.b1]
at org.eclipse.smarthome.ui.basic.internal.render.PageRenderer.processChildren(PageRenderer.java:137) [205:org.eclipse.smarthome.ui.basic:0.10.0.b1]
at org.eclipse.smarthome.ui.basic.internal.render.PageRenderer.processChildren(PageRenderer.java:158) [205:org.eclipse.smarthome.ui.basic:0.10.0.b1]
at org.eclipse.smarthome.ui.basic.internal.render.PageRenderer.processPage(PageRenderer.java:100) [205:org.eclipse.smarthome.ui.basic:0.10.0.b1]
at org.eclipse.smarthome.ui.basic.internal.servlet.WebAppServlet.service(WebAppServlet.java:159) [205:org.eclipse.smarthome.ui.basic:0.10.0.b1]
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:848) [88:org.eclipse.jetty.servlet:9.3.22.v20171030]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:584) [88:org.eclipse.jetty.servlet:9.3.22.v20171030]
at org.ops4j.pax.web.service.jetty.internal.HttpServiceServletHandler.doHandle(HttpServiceServletHandler.java:71) [191:org.ops4j.pax.web.pax-web-jetty:6.0.7]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) [87:org.eclipse.jetty.server:9.3.22.v20171030]
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) [85:org.eclipse.jetty.security:9.3.22.v20171030]
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226) [87:org.eclipse.jetty.server:9.3.22.v20171030]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180) [87:org.eclipse.jetty.server:9.3.22.v20171030]
at org.ops4j.pax.web.service.jetty.internal.HttpServiceContext.doHandle(HttpServiceContext.java:284) [191:org.ops4j.pax.web.pax-web-jetty:6.0.7]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512) [88:org.eclipse.jetty.servlet:9.3.22.v20171030]
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) [87:org.eclipse.jetty.server:9.3.22.v20171030]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112) [87:org.eclipse.jetty.server:9.3.22.v20171030]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [87:org.eclipse.jetty.server:9.3.22.v20171030]
at org.ops4j.pax.web.service.jetty.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:80) [191:org.ops4j.pax.web.pax-web-jetty:6.0.7]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) [87:org.eclipse.jetty.server:9.3.22.v20171030]
at org.eclipse.jetty.server.Server.handle(Server.java:534) [87:org.eclipse.jetty.server:9.3.22.v20171030]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:333) [87:org.eclipse.jetty.server:9.3.22.v20171030]
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251) [87:org.eclipse.jetty.server:9.3.22.v20171030]
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283) [79:org.eclipse.jetty.io:9.3.22.v20171030]
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108) [79:org.eclipse.jetty.io:9.3.22.v20171030]
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93) [79:org.eclipse.jetty.io:9.3.22.v20171030]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303) [90:org.eclipse.jetty.util:9.3.22.v20171030]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148) [90:org.eclipse.jetty.util:9.3.22.v20171030]
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136) [90:org.eclipse.jetty.util:9.3.22.v20171030]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671) [90:org.eclipse.jetty.util:9.3.22.v20171030]
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589) [90:org.eclipse.jetty.util:9.3.22.v20171030]
at java.lang.Thread.run(Thread.java:748) [?:?]
Caused by: java.io.FileNotFoundException: /openhab/conf/transform/airquality.map (No such file or directory)
at java.io.FileInputStream.open0(Native Method) ~[?:?]
at java.io.FileInputStream.open(FileInputStream.java:195) ~[?:?]
at java.io.FileInputStream.<init>(FileInputStream.java:138) ~[?:?]
at java.io.FileInputStream.<init>(FileInputStream.java:93) ~[?:?]
at java.io.FileReader.<init>(FileReader.java:58) ~[?:?]
at org.eclipse.smarthome.transform.map.internal.MapTransformationService.internalLoadTransform(MapTransformationService.java:62) ~[?:?]
... 37 more