apache/maven · error · MavenException

Unable to redirect logging to ${logFile}

Error message

Unable to redirect logging to ${logFile}

What it means

Error "Unable to redirect logging to ${logFile}" thrown in apache/maven.

Source

Thrown at impl/maven-cli/src/main/java/org/apache/maven/cling/invoker/LookupInvoker.java:425

        // no need to set them back, this is already handled by MessageUtils.systemUninstall() above
    }

    protected Consumer<String> determineWriter(C context) {
        if (context.writer == null) {
            context.writer = doDetermineWriter(context);
        }
        return context.writer;
    }

    protected Consumer<String> doDetermineWriter(C context) {
        if (context.options().logFile().isPresent()) {
            Path logFile = context.cwd.resolve(context.options().logFile().get());
            try {
                PrintWriter printWriter = new PrintWriter(Files.newBufferedWriter(logFile), true);
                context.closeables.add(printWriter);
                return printWriter::println;
            } catch (IOException e) {
                throw new MavenException("Unable to redirect logging to " + logFile, e);
            }
        } else {
            // Given the terminal creation has been offloaded to a different thread,
            // do not pass directly the terminal writer
            return msg -> {
                PrintWriter pw = context.terminal.writer();
                pw.println(msg);
                pw.flush();
            };
        }
    }

    protected void activateLogging(C context) throws Exception {
        if (!SLF4JBridgeHandler.isInstalled()) {
            SLF4JBridgeHandler.removeHandlersForRootLogger();
            SLF4JBridgeHandler.install();
        }

View on GitHub (pinned to e4093d4e12)

When it happens

Trigger: Thrown at impl/maven-cli/src/main/java/org/apache/maven/cling/invoker/LookupInvoker.java:425 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/maven@e4093d4e12 (2026-08-21). Data as JSON: /api/errors/afc3b7290da72859. Report an issue: GitHub.