Encountered 'Can't find extension: csv' error while running the NetLogo model

[Kejian2023]

When I perform calibration, I encounter an error even though I have installed the CSV extension for NetLogo.

results <- nlrx::run_nl_all(nl = nl, split = 2)
Exception in thread "main" Can't find extension: csv at position 12 in
at org.nlogo.core.ErrorSource.signalError(ErrorSource.scala:11)
at org.nlogo.workspace.ExtensionManager.importExtension(ExtensionManager.scala:180)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1(StructureParser.scala:74)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1$adapted(StructureParser.scala:68)
at scala.collection.immutable.List.foreach(List.scala:431)
at org.nlogo.parse.StructureParser$.parsingWithExtensions(StructureParser.scala:68)
at org.nlogo.parse.StructureParser$.parseSources(StructureParser.scala:33)
at org.nlogo.parse.NetLogoParser.basicParse(NetLogoParser.scala:17)
at org.nlogo.parse.NetLogoParser.basicParse$(NetLogoParser.scala:15)
at org.nlogo.parse.FrontEnd$.basicParse(FrontEnd.scala:10)
at org.nlogo.parse.FrontEndMain.frontEnd(FrontEnd.scala:26)
at org.nlogo.parse.FrontEndMain.frontEnd$(FrontEnd.scala:25)
at org.nlogo.parse.FrontEnd$.frontEnd(FrontEnd.scala:10)
at org.nlogo.compile.CompilerMain$.compile(CompilerMain.scala:47)
at org.nlogo.compile.Compiler.compileProgram(Compiler.scala:54)
at org.nlogo.headless.HeadlessModelOpener.openFromModel(HeadlessModelOpener.scala:50)
at org.nlogo.headless.HeadlessWorkspace.openModel(HeadlessWorkspace.scala:535)
at org.nlogo.headless.HeadlessWorkspace.open(HeadlessWorkspace.scala:502)
at org.nlogo.api.Controllable.open(Controllable.scala:19)
at org.nlogo.headless.Main$.newWorkspace$1(Main.scala:20)
at org.nlogo.headless.Main$.runExperiment(Main.scala:24)
at org.nlogo.headless.Main$.$anonfun$main$1(Main.scala:14)
at org.nlogo.headless.Main$.$anonfun$main$1$adapted(Main.scala:14)
at scala.Option.foreach(Option.scala:407)
at org.nlogo.headless.Main$.main(Main.scala:14)
at org.nlogo.headless.Main.main(Main.scala)
Exception in thread "main" Can't find extension: csv at position 12 in
at org.nlogo.core.ErrorSource.signalError(ErrorSource.scala:11)
at org.nlogo.workspace.ExtensionManager.importExtension(ExtensionManager.scala:180)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1(StructureParser.scala:74)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1$adapted(StructureParser.scala:68)
at scala.collection.immutable.List.foreach(List.scala:431)
at org.nlogo.parse.StructureParser$.parsingWithExtensions(StructureParser.scala:68)
at org.nlogo.parse.StructureParser$.parseSources(StructureParser.scala:33)
at org.nlogo.parse.NetLogoParser.basicParse(NetLogoParser.scala:17)
at org.nlogo.parse.NetLogoParser.basicParse$(NetLogoParser.scala:15)
at org.nlogo.parse.FrontEnd$.basicParse(FrontEnd.scala:10)
at org.nlogo.parse.FrontEndMain.frontEnd(FrontEnd.scala:26)
at org.nlogo.parse.FrontEndMain.frontEnd$(FrontEnd.scala:25)
at org.nlogo.parse.FrontEnd$.frontEnd(FrontEnd.scala:10)
at org.nlogo.compile.CompilerMain$.compile(CompilerMain.scala:47)
at org.nlogo.compile.Compiler.compileProgram(Compiler.scala:54)
at org.nlogo.headless.HeadlessModelOpener.openFromModel(HeadlessModelOpener.scala:50)
at org.nlogo.headless.HeadlessWorkspace.openModel(HeadlessWorkspace.scala:535)
at org.nlogo.headless.HeadlessWorkspace.open(HeadlessWorkspace.scala:502)
at org.nlogo.api.Controllable.open(Controllable.scala:19)
at org.nlogo.headless.Main$.newWorkspace$1(Main.scala:20)
at org.nlogo.headless.Main$.runExperiment(Main.scala:24)
at org.nlogo.headless.Main$.$anonfun$main$1(Main.scala:14)
at org.nlogo.headless.Main$.$anonfun$main$1$adapted(Main.scala:14)
at scala.Option.foreach(Option.scala:407)
at org.nlogo.headless.Main$.main(Main.scala:14)
at org.nlogo.headless.Main.main(Main.scala)
Exception in thread "main" Can't find extension: csv at position 12 in
at org.nlogo.core.ErrorSource.signalError(ErrorSource.scala:11)
at org.nlogo.workspace.ExtensionManager.importExtension(ExtensionManager.scala:180)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1(StructureParser.scala:74)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1$adapted(StructureParser.scala:68)
at scala.collection.immutable.List.foreach(List.scala:431)
at org.nlogo.parse.StructureParser$.parsingWithExtensions(StructureParser.scala:68)
at org.nlogo.parse.StructureParser$.parseSources(StructureParser.scala:33)
at org.nlogo.parse.NetLogoParser.basicParse(NetLogoParser.scala:17)
at org.nlogo.parse.NetLogoParser.basicParse$(NetLogoParser.scala:15)
at org.nlogo.parse.FrontEnd$.basicParse(FrontEnd.scala:10)
at org.nlogo.parse.FrontEndMain.frontEnd(FrontEnd.scala:26)
at org.nlogo.parse.FrontEndMain.frontEnd$(FrontEnd.scala:25)
at org.nlogo.parse.FrontEnd$.frontEnd(FrontEnd.scala:10)
at org.nlogo.compile.CompilerMain$.compile(CompilerMain.scala:47)
at org.nlogo.compile.Compiler.compileProgram(Compiler.scala:54)
at org.nlogo.headless.HeadlessModelOpener.openFromModel(HeadlessModelOpener.scala:50)
at org.nlogo.headless.HeadlessWorkspace.openModel(HeadlessWorkspace.scala:535)
at org.nlogo.headless.HeadlessWorkspace.open(HeadlessWorkspace.scala:502)
at org.nlogo.api.Controllable.open(Controllable.scala:19)
at org.nlogo.headless.Main$.newWorkspace$1(Main.scala:20)
at org.nlogo.headless.Main$.runExperiment(Main.scala:24)
at org.nlogo.headless.Main$.$anonfun$main$1(Main.scala:14)
at org.nlogo.headless.Main$.$anonfun$main$1$adapted(Main.scala:14)
at scala.Option.foreach(Option.scala:407)
at org.nlogo.headless.Main$.main(Main.scala:14)
at org.nlogo.headless.Main.main(Main.scala)
Exception in thread "main" Can't find extension: csv at position 12 in
at org.nlogo.core.ErrorSource.signalError(ErrorSource.scala:11)
at org.nlogo.workspace.ExtensionManager.importExtension(ExtensionManager.scala:180)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1(StructureParser.scala:74)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1$adapted(StructureParser.scala:68)
at scala.collection.immutable.List.foreach(List.scala:431)
at org.nlogo.parse.StructureParser$.parsingWithExtensions(StructureParser.scala:68)
at org.nlogo.parse.StructureParser$.parseSources(StructureParser.scala:33)
at org.nlogo.parse.NetLogoParser.basicParse(NetLogoParser.scala:17)
at org.nlogo.parse.NetLogoParser.basicParse$(NetLogoParser.scala:15)
at org.nlogo.parse.FrontEnd$.basicParse(FrontEnd.scala:10)
at org.nlogo.parse.FrontEndMain.frontEnd(FrontEnd.scala:26)
at org.nlogo.parse.FrontEndMain.frontEnd$(FrontEnd.scala:25)
at org.nlogo.parse.FrontEnd$.frontEnd(FrontEnd.scala:10)
at org.nlogo.compile.CompilerMain$.compile(CompilerMain.scala:47)
at org.nlogo.compile.Compiler.compileProgram(Compiler.scala:54)
at org.nlogo.headless.HeadlessModelOpener.openFromModel(HeadlessModelOpener.scala:50)
at org.nlogo.headless.HeadlessWorkspace.openModel(HeadlessWorkspace.scala:535)
at org.nlogo.headless.HeadlessWorkspace.open(HeadlessWorkspace.scala:502)
at org.nlogo.api.Controllable.open(Controllable.scala:19)
at org.nlogo.headless.Main$.newWorkspace$1(Main.scala:20)
at org.nlogo.headless.Main$.runExperiment(Main.scala:24)
at org.nlogo.headless.Main$.$anonfun$main$1(Main.scala:14)
at org.nlogo.headless.Main$.$anonfun$main$1$adapted(Main.scala:14)
at scala.Option.foreach(Option.scala:407)
at org.nlogo.headless.Main$.main(Main.scala:14)
at org.nlogo.headless.Main.main(Main.scala)
Exception in thread "main" Can't find extension: csv at position 12 in
at org.nlogo.core.ErrorSource.signalError(ErrorSource.scala:11)
at org.nlogo.workspace.ExtensionManager.importExtension(ExtensionManager.scala:180)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1(StructureParser.scala:74)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1$adapted(StructureParser.scala:68)
at scala.collection.immutable.List.foreach(List.scala:431)
at org.nlogo.parse.StructureParser$.parsingWithExtensions(StructureParser.scala:68)
at org.nlogo.parse.StructureParser$.parseSources(StructureParser.scala:33)
at org.nlogo.parse.NetLogoParser.basicParse(NetLogoParser.scala:17)
at org.nlogo.parse.NetLogoParser.basicParse$(NetLogoParser.scala:15)
at org.nlogo.parse.FrontEnd$.basicParse(FrontEnd.scala:10)
at org.nlogo.parse.FrontEndMain.frontEnd(FrontEnd.scala:26)
at org.nlogo.parse.FrontEndMain.frontEnd$(FrontEnd.scala:25)
at org.nlogo.parse.FrontEnd$.frontEnd(FrontEnd.scala:10)
at org.nlogo.compile.CompilerMain$.compile(CompilerMain.scala:47)
at org.nlogo.compile.Compiler.compileProgram(Compiler.scala:54)
at org.nlogo.headless.HeadlessModelOpener.openFromModel(HeadlessModelOpener.scala:50)
at org.nlogo.headless.HeadlessWorkspace.openModel(HeadlessWorkspace.scala:535)
at org.nlogo.headless.HeadlessWorkspace.open(HeadlessWorkspace.scala:502)
at org.nlogo.api.Controllable.open(Controllable.scala:19)
at org.nlogo.headless.Main$.newWorkspace$1(Main.scala:20)
at org.nlogo.headless.Main$.runExperiment(Main.scala:24)
at org.nlogo.headless.Main$.$anonfun$main$1(Main.scala:14)
at org.nlogo.headless.Main$.$anonfun$main$1$adapted(Main.scala:14)
at scala.Option.foreach(Option.scala:407)
at org.nlogo.headless.Main$.main(Main.scala:14)
at org.nlogo.headless.Main.main(Main.scala)
Exception in thread "main" Can't find extension: csv at position 12 in
at org.nlogo.core.ErrorSource.signalError(ErrorSource.scala:11)
at org.nlogo.workspace.ExtensionManager.importExtension(ExtensionManager.scala:180)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1(StructureParser.scala:74)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1$adapted(StructureParser.scala:68)
at scala.collection.immutable.List.foreach(List.scala:431)
at org.nlogo.parse.StructureParser$.parsingWithExtensions(StructureParser.scala:68)
at org.nlogo.parse.StructureParser$.parseSources(StructureParser.scala:33)
at org.nlogo.parse.NetLogoParser.basicParse(NetLogoParser.scala:17)
at org.nlogo.parse.NetLogoParser.basicParse$(NetLogoParser.scala:15)
at org.nlogo.parse.FrontEnd$.basicParse(FrontEnd.scala:10)
at org.nlogo.parse.FrontEndMain.frontEnd(FrontEnd.scala:26)
at org.nlogo.parse.FrontEndMain.frontEnd$(FrontEnd.scala:25)
at org.nlogo.parse.FrontEnd$.frontEnd(FrontEnd.scala:10)
at org.nlogo.compile.CompilerMain$.compile(CompilerMain.scala:47)
at org.nlogo.compile.Compiler.compileProgram(Compiler.scala:54)
at org.nlogo.headless.HeadlessModelOpener.openFromModel(HeadlessModelOpener.scala:50)
at org.nlogo.headless.HeadlessWorkspace.openModel(HeadlessWorkspace.scala:535)
at org.nlogo.headless.HeadlessWorkspace.open(HeadlessWorkspace.scala:502)
at org.nlogo.api.Controllable.open(Controllable.scala:19)
at org.nlogo.headless.Main$.newWorkspace$1(Main.scala:20)
at org.nlogo.headless.Main$.runExperiment(Main.scala:24)
at org.nlogo.headless.Main$.$anonfun$main$1(Main.scala:14)
at org.nlogo.headless.Main$.$anonfun$main$1$adapted(Main.scala:14)
at scala.Option.foreach(Option.scala:407)
at org.nlogo.headless.Main$.main(Main.scala:14)
at org.nlogo.headless.Main.main(Main.scala)
Exception in thread "main" Can't find extension: csv at position 12 in
at org.nlogo.core.ErrorSource.signalError(ErrorSource.scala:11)
at org.nlogo.workspace.ExtensionManager.importExtension(ExtensionManager.scala:180)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1(StructureParser.scala:74)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1$adapted(StructureParser.scala:68)
at scala.collection.immutable.List.foreach(List.scala:431)
at org.nlogo.parse.StructureParser$.parsingWithExtensions(StructureParser.scala:68)
at org.nlogo.parse.StructureParser$.parseSources(StructureParser.scala:33)
at org.nlogo.parse.NetLogoParser.basicParse(NetLogoParser.scala:17)
at org.nlogo.parse.NetLogoParser.basicParse$(NetLogoParser.scala:15)
at org.nlogo.parse.FrontEnd$.basicParse(FrontEnd.scala:10)
at org.nlogo.parse.FrontEndMain.frontEnd(FrontEnd.scala:26)
at org.nlogo.parse.FrontEndMain.frontEnd$(FrontEnd.scala:25)
at org.nlogo.parse.FrontEnd$.frontEnd(FrontEnd.scala:10)
at org.nlogo.compile.CompilerMain$.compile(CompilerMain.scala:47)
at org.nlogo.compile.Compiler.compileProgram(Compiler.scala:54)
at org.nlogo.headless.HeadlessModelOpener.openFromModel(HeadlessModelOpener.scala:50)
at org.nlogo.headless.HeadlessWorkspace.openModel(HeadlessWorkspace.scala:535)
at org.nlogo.headless.HeadlessWorkspace.open(HeadlessWorkspace.scala:502)
at org.nlogo.api.Controllable.open(Controllable.scala:19)
at org.nlogo.headless.Main$.newWorkspace$1(Main.scala:20)
at org.nlogo.headless.Main$.runExperiment(Main.scala:24)
at org.nlogo.headless.Main$.$anonfun$main$1(Main.scala:14)
at org.nlogo.headless.Main$.$anonfun$main$1$adapted(Main.scala:14)
at scala.Option.foreach(Option.scala:407)
at org.nlogo.headless.Main$.main(Main.scala:14)
at org.nlogo.headless.Main.main(Main.scala)
Exception in thread "main" Can't find extension: csv at position 12 in
at org.nlogo.core.ErrorSource.signalError(ErrorSource.scala:11)
at org.nlogo.workspace.ExtensionManager.importExtension(ExtensionManager.scala:180)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1(StructureParser.scala:74)
at org.nlogo.parse.StructureParser$.$anonfun$parsingWithExtensions$1$adapted(StructureParser.scala:68)
at scala.collection.immutable.List.foreach(List.scala:431)
at org.nlogo.parse.StructureParser$.parsingWithExtensions(StructureParser.scala:68)
at org.nlogo.parse.StructureParser$.parseSources(StructureParser.scala:33)
at org.nlogo.parse.NetLogoParser.basicParse(NetLogoParser.scala:17)
at org.nlogo.parse.NetLogoParser.basicParse$(NetLogoParser.scala:15)
at org.nlogo.parse.FrontEnd$.basicParse(FrontEnd.scala:10)
at org.nlogo.parse.FrontEndMain.frontEnd(FrontEnd.scala:26)
at org.nlogo.parse.FrontEndMain.frontEnd$(FrontEnd.scala:25)
at org.nlogo.parse.FrontEnd$.frontEnd(FrontEnd.scala:10)
at org.nlogo.compile.CompilerMain$.compile(CompilerMain.scala:47)
at org.nlogo.compile.Compiler.compileProgram(Compiler.scala:54)
at org.nlogo.headless.HeadlessModelOpener.openFromModel(HeadlessModelOpener.scala:50)
at org.nlogo.headless.HeadlessWorkspace.openModel(HeadlessWorkspace.scala:535)
at org.nlogo.headless.HeadlessWorkspace.open(HeadlessWorkspace.scala:502)
at org.nlogo.api.Controllable.open(Controllable.scala:19)
at org.nlogo.headless.Main$.newWorkspace$1(Main.scala:20)
at org.nlogo.headless.Main$.runExperiment(Main.scala:24)
at org.nlogo.headless.Main$.$anonfun$main$1(Main.scala:14)
at org.nlogo.headless.Main$.$anonfun$main$1$adapted(Main.scala:14)
at scala.Option.foreach(Option.scala:407)
at org.nlogo.headless.Main$.main(Main.scala:14)
at org.nlogo.headless.Main.main(Main.scala)

[Polvi8]

I find myself in a similar situation. Which NetLogo version are you using? I my case I tried running a model built with version 6.4.0 and when I previouly run > print(nl), first line in the summary part is: "supported nlversion: ✗". I wonder if this might has something to do with the error loading the csv extensions.

Edit: just saw @bitbacchus suggesting to try this in another issue.

[rfgoldberg]

I found myself in the same situation. It took me a while to resolve because running my model headless was working, but the minute I ran using the same model with nlrx, I kept getting the error that it couldn't find the extensions. I tried the suggestions linked above, but nothing worked. I'm running nlrx on a linux server, so I was able to test both the headless and nlrx runs in the same place. As a result, I could see that the nlrx version was somehow overriding the specifications in the headless.sh file. These specs include the java version as well as all of the arguments in JAVA_OPTS, including extensions directory. I could see the JAVA_OPTS variable that nlrx was using was only two arguments long, the wrong jvmem spec and the encoding, nothing else showed up. I finally got the model to run though by forcing JAVA to equal the path I wanted (ignoring JAVA_HOME which I confirmed was correct in my linux environment but the minute it ran in nlrx, the shell file printed out the wrong one) and changing the name of JAVA_OPTS to something else (just OPTS). This totally works, but I have no idea what other file is feeding nlrx the headless specs. These mods broke the headless linux models though, so I had to keep a separate file for running headless on linux with the original commands. I hope this resolves some things for folks, though it's not the nicest workaround. It would be great to have some clarity on what else could be going on here.