Fix: FrozenError in project list #313
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To reproduce the issue, launch the web server with no configuration, add a project (its contents don't matter), and open http://127.0.0.1:8080/taskjuggler . <details> <summary><code>tj3webd</code> output</summary> ``` $ tj3webd -d --debug TaskJuggler v3.8.4 - A Project Management Software Copyright (c) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 by Chris Schlaeger <cs@taskjuggler.org> This program is free software; you can redistribute it and/or modify it under the terms of version 2 of the GNU General Public License as published by the Free Software Foundation. [2025-11-27 20:30:10] INFO WEBrick 1.9.2 [2025-11-27 20:30:10] INFO ruby 3.4.1 (2024-12-25) [aarch64-linux-android] [2025-11-27 20:30:10] INFO WEBrick::HTTPServer#start: pid=7462 port=8080 127.0.0.1 - - [27/Nov/2025:20:30:36 CET] "GET /taskjuggler HTTP/1.1" 200 422 - -> /taskjuggler Exception 'WEBrick::HTTPStatus::EOFError' at /data/data/com.termux/files/usr/lib/ruby/gems/3.4.0/gems/webrick-1.9.2/lib/webrick/httpserver.rb:82 - WEBrick::HTTPStatus::EOFError Exception 'FrozenError' at /data/data/com.termux/files/usr/lib/ruby/gems/3.4.0/gems/taskjuggler-3.8.4/lib/taskjuggler/daemon/ReportServlet.rb:191 - can't modify frozen String: "== Welcome to the TaskJuggler Project Server ==\n----\n" Error: Cannot serve GET request: GET /taskjuggler HTTP/1.1 Host: 127.0.0.1:8080 User-Agent: Mozilla/5.0 (Android 10; Mobile; rv:133.0) Gecko/133.0 Firefox/133.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US Accept-Encoding: gzip, deflate, br, zstd DNT: 1 Sec-GPC: 1 Connection: keep-alive Upgrade-Insecure-Requests: 1 Sec-Fetch-Dest: document Sec-Fetch-Mode: navigate Sec-Fetch-Site: cross-site Priority: u=0, i can't modify frozen String: "== Welcome to the TaskJuggler Project Server ==\n----\n" 127.0.0.1 - - [27/Nov/2025:20:40:36 CET] "GET /taskjuggler HTTP/1.1" 412 563 - -> /taskjuggler [2025-11-27 20:40:36] ERROR SystemExit: exit /data/data/com.termux/files/usr/lib/ruby/gems/3.4.0/gems/taskjuggler-3.8.4/lib/taskjuggler/MessageHandler.rb:298:in 'Kernel#exit' /data/data/com.termux/files/usr/lib/ruby/gems/3.4.0/gems/taskjuggler-3.8.4/lib/taskjuggler/MessageHandler.rb:298:in 'TaskJuggler::MessageHandlerInstance#addMessage' /data/data/com.termux/files/usr/lib/ruby/gems/3.4.0/gems/taskjuggler-3.8.4/lib/taskjuggler/MessageHandler.rb:197:in 'TaskJuggler::MessageHandlerInstance#error' /data/data/com.termux/files/usr/lib/ruby/gems/3.4.0/gems/taskjuggler-3.8.4/lib/taskjuggler/daemon/ReportServlet.rb:240:in 'TaskJuggler::ReportServlet#error' /data/data/com.termux/files/usr/lib/ruby/gems/3.4.0/gems/taskjuggler-3.8.4/lib/taskjuggler/daemon/ReportServlet.rb:62:in 'TaskJuggler::ReportServlet#do_GET' /data/data/com.termux/files/usr/lib/ruby/gems/3.4.0/gems/webrick-1.9.2/lib/webrick/httpservlet/abstract.rb:105:in 'WEBrick::HTTPServlet::AbstractServlet#service' /data/data/com.termux/files/usr/lib/ruby/gems/3.4.0/gems/webrick-1.9.2/lib/webrick/httpserver.rb:140:in 'WEBrick::HTTPServer#service' /data/data/com.termux/files/usr/lib/ruby/gems/3.4.0/gems/webrick-1.9.2/lib/webrick/httpserver.rb:96:in 'WEBrick::HTTPServer#run' /data/data/com.termux/files/usr/lib/ruby/gems/3.4.0/gems/webrick-1.9.2/lib/webrick/server.rb:309:in 'block in WEBrick::GenericServer#start_thread' ``` </details>
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To reproduce the issue, launch the web server with no configuration, add a project (its contents don't matter), and open http://127.0.0.1:8080/taskjuggler .
tj3webdoutput