💥 2026 New Year's Sale 💥 Take 50% off your first 6 months! (new subscribers only, renews at regular price).

Join the Treehouse affiliate program and earn 25% recurring commission!

  • Treehouse Logo
  • Plans
    Chevron
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
  • Library
    Chevron
    • All Courses
    • Tracks
    • College Credit
  • Techdegree
    Chevron
    • Overview
    • Front End Development
    • Full Stack JavaScript
    • Data Analysis
    • UX Design
    • Python
  • Community
    Chevron
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
    • 100 Days of Code
  • Resources
    Chevron
    • Career Toolbox
    • CodeForward
    • Free Treehouse Near Me
    • Jobs
    • Blog
    • Support
    • About
  • For Individuals For Businesses For Schools For Libraries For Military
  • All Courses Tracks College Credit
  • Overview Front End Web Development Full Stack JavaScript Python Development Data Analysis UX Design
  • Code Adventures Discord Forum Success Stories Treehouse Links 100 Days of Code
  • Career Toolbox CodeForward Free Treehouse Near Me Jobs Blog Support About
  • Sign In
  • Free Trial
Instagram Twitter Facebook YouTube LinkedIn
    • Newest
      • Newest
      • Active
      • Unanswered
      • Featured
    • All Topics
      • All Topics
      • • General Discussion
      • • AI
      • • APIs
      • • Coding for Kids
      • • College Credit
      • • Computer Science
      • • CSS
      • • Data Analysis
      • • Databases
      • • Design
      • • Development Tools
      • • Digital Literacy
      • • Game Development
      • • Go Language
      • • HTML
      • • Java
      • • JavaScript
      • • Learning Resources
      • • Machine Learning
      • • No-Code
      • • PHP
      • • Professional Growth
      • • Python
      • • Quality Assurance
      • • React
      • • Ruby
      • • Security
      • • Swift
      • • Vibe Coding
  • Igor Volodichin
    Igor Volodichin
    5,431 Points

    Resolution I had created is working fine in Intellij but encounters an issue while tested here. Can you please advise?

    Posted August 29, 2022 2:18pm by Igor Volodichin
    Igor Volodichin
    5,431 Points
    • Java

    0 Answers

  • Andrew Stevens
    Andrew Stevens
    11,083 Points

    What's wrong with my code?

    Posted July 17, 2022 7:46pm by Andrew Stevens
    Andrew Stevens
    11,083 Points
    • Java

    0 Answers

  • russellsoper
    russellsoper
    4,124 Points

    Submission works, tests don't work on treehouse, won't tell me why.

    Posted July 14, 2022 1:12pm by russellsoper
    russellsoper
    4,124 Points
    • Java

    0 Answers

  • Anh Tran
    Anh Tran
    2,335 Points

    Local Code Challenges don't work

    Posted June 19, 2022 9:43am by Anh Tran
    Anh Tran
    2,335 Points
    • Java

    0 Answers

  • Tad Luedeke
    Tad Luedeke
    12,677 Points

    Oh no! We encountered an error with your last submission.

    Posted February 14, 2022 4:28pm by Tad Luedeke
    Tad Luedeke
    12,677 Points
    • Java

    0 Answers

  • hamsternation
    hamsternation
    26,617 Points

    Filtering High Scores submission failing

    Posted December 28, 2021 11:05pm by hamsternation
    hamsternation
    26,617 Points
    • Java

    0 Answers

  • wiesenknopf
    wiesenknopf
    17,091 Points

    Can't find error...

    Posted October 11, 2021 1:20pm by wiesenknopf
    wiesenknopf
    17,091 Points
    • Java

    1 Answer

  • GLEB CHEMBORISOV
    GLEB CHEMBORISOV
    11,182 Points

    system does not accept answer

    Posted September 19, 2021 7:00am by GLEB CHEMBORISOV
    GLEB CHEMBORISOV
    11,182 Points
    • Java

    0 Answers

  • Nick Dunn
    Nick Dunn
    2,043 Points

    Every one of these challenges fails for me but works perfectly locally using IntelliJ

    Posted April 13, 2021 5:18am by Nick Dunn
    Nick Dunn
    2,043 Points
    • Java

    2 Answers

  • Jen Dunlap
    Jen Dunlap
    4,385 Points

    Oh no! We encountered an error with your last submission.

    Posted March 29, 2021 11:04pm by Jen Dunlap
    Jen Dunlap
    4,385 Points
    • Java

    0 Answers

  • Warren Kushner
    Warren Kushner
    4,046 Points

    when I run gradle task treehouse > prepareSubmission it says treehous not found in root project

    Posted November 10, 2020 5:22pm by Warren Kushner
    Warren Kushner
    4,046 Points
    • Java

    0 Answers

  • John Clune
    PLUS
    John Clune
    Courses Plus Student 4,951 Points

    apache.commons.csv does not exist.

    Posted April 9, 2020 5:08pm by John Clune
    John Clune
    Courses Plus Student 4,951 Points
    • Java

    2 Answers

  • cesarmatta
    cesarmatta
    11,592 Points

    Challenge High Score

    Posted November 26, 2019 9:26pm by cesarmatta
    cesarmatta
    11,592 Points
    • Java

    2 Answers

  • Dinu Comendant
    Dinu Comendant
    6,049 Points

    Parameter "url" must not be null

    Posted November 23, 2019 3:00pm by Dinu Comendant
    Dinu Comendant
    6,049 Points
    • Java

    3 Answers

  • alexko
    alexko
    10,448 Points

    Help please. In task "Filtering High Scores"

    Posted January 9, 2019 1:52am by alexko
    alexko
    10,448 Points
    • Java

    0 Answers

  • Sean M
    Sean M
    7,344 Points

    Hi. Could somebody please let me know how to upload the finished code for a code challenge. Thank you.

    Posted December 21, 2018 4:59pm by Sean M
    Sean M
    7,344 Points
    • Java

    1 Answer

  • MANOJ KUMAR YADAV
    MANOJ KUMAR YADAV
    3,507 Points

    Not able to get result from printBurgerTimeScoresImperatively

    Posted October 31, 2018 6:28pm by MANOJ KUMAR YADAV
    MANOJ KUMAR YADAV
    3,507 Points
    • Java

    1 Answer

  • Balazs Peak
    Balazs Peak
    46,160 Points

    Local Code Challenge not working at all

    Posted September 25, 2018 10:33pm by Balazs Peak
    Balazs Peak
    46,160 Points
    • Java

    1 Answer

  • Haisam Elkewidy
    Haisam Elkewidy
    26,987 Points

    Project not building on IntelliJ.

    Posted September 22, 2018 6:15pm by Haisam Elkewidy
    Haisam Elkewidy
    26,987 Points
    • Java

    0 Answers

  • Dorukhan Arat
    Dorukhan Arat
    31,325 Points

    I can't build this project with gradle

    Posted August 21, 2018 1:15pm by Dorukhan Arat
    Dorukhan Arat
    31,325 Points
    • Java

    0 Answers

  • Myung Kyu Song
    Myung Kyu Song
    8,460 Points

    Meet Streams Challenge: When I import the lcc-java-fp-highscore-1.0.3-FILTER gradle project, it says "sync fail".

    Posted June 28, 2018 11:32am by Myung Kyu Song
    Myung Kyu Song
    8,460 Points
    • Java

    1 Answer

  • Leon Kamerlin
    Leon Kamerlin
    18,728 Points

    I can't run the app

    Posted August 9, 2017 9:32am by Leon Kamerlin
    Leon Kamerlin
    18,728 Points
    • Java

    0 Answers

  • David Lin
    David Lin
    35,864 Points

    Functional Programming Streams Filtering Code Challenge failed to download - "No file"

    Posted April 29, 2017 8:20pm by David Lin
    David Lin
    35,864 Points
    • Java

    2 Answers

  • Manuel Klettke
    Manuel Klettke
    25,324 Points

    Bug when building from Germany (probably other countries as well)

    Posted April 28, 2017 5:27pm by Manuel Klettke
    Manuel Klettke
    25,324 Points
    • Java

    1 Answer

Posting to the forum is only allowed for members with active accounts.
Please sign in or sign up to post.

    Treehouse

  • About
  • Blog
  • Careers
  • Community
  • Stories
  • Shop
  • Contact
  • Gift Card

See Full Catalogue

Techdegree

  • Front End Web Development
  • Full Stack JavaScript
  • Python Development
  • Data Analysis
  • UX Design

Tracks

  • Learn to Code for Beginners
  • Beginning Python
  • Beginning SQL
  • Beginning Java
  • ...see more

Courses

  • JavaScript Basics
  • Intro to HTML & CSS
  • Python Basics
  • CSS Layout
  • ...see more

Explore

  • Plans
  • Affiliates
  • Perks
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
Terms & Conditions | Privacy

© 2026 Treehouse Island, Inc.