Cannot open MCreator

Status
Resolved
Issue description

I tried to delete the entire gradle file, checking the internet connection and searched for everything for how to solve it, but how do I fix this problem?

Executing 
    Gradle task: eclipse

Build 
    info: MCreator 2020.4.32115, forge-1.15.2, 64-bit, 7813 MB, Windows 7, JVM 
    1.8.0_252, JAVA_HOME: C:\Users\Administrator\Desktop\User\MC\Minecraft 
    mods creator\MCreator\jdk

FAILURE: 
    Build failed with an exception.


    What went wrong:


    problem occurred configuring root project 'item_exchanger'.


    Could not resolve all artifacts for configuration ':classpath'.

 
      > Could not download gson.jar (com.google.code.gson:gson:2.8.5)

 
         > Could not get resource 
    'https://jcenter.bintray.com/com/google/code/gson/gson/2.8.5/gson-2.8.5…'.

 
            > Could not GET 
    'https://jcenter.bintray.com/com/google/code/gson/gson/2.8.5/gson-2.8.5…'.

 
               > sun.security.validator.ValidatorException: PKIX path building 
    failed: sun.security.provider.certpath.SunCertPathBuilderException: unable 
    to find valid certification path to requested target

 
      > Could not download guava.jar (com.google.guava:guava:26.0-jre)

 
         > Could not get resource 
    'https://jcenter.bintray.com/com/google/guava/guava/26.0-jre/guava-26.0-…'.

 
            > Could not GET 
    'https://jcenter.bintray.com/com/google/guava/guava/26.0-jre/guava-26.0-…'.

 
               > sun.security.validator.ValidatorException: PKIX path building 
    failed: sun.security.provider.certpath.SunCertPathBuilderException: unable 
    to find valid certification path to requested target


    Try:

Run 
    with --stacktrace option to get the stack trace. Run with --info or 
    --debug option to get more log output. Run with --scan to get full 
    insights.


    Get more help at https://help.gradle.org

BUILD 
    FAILED in 46s

BUILD 
    FAILED

Task 
    completed in 50741 milliseconds

Can you please tell me how to fix it? This error has occured for about 3 weeks already

Issue comments

PKIX path building 
    failed: sun.security.provider.certpath.SunCertPathBuilderException: unable 
    to find valid certification path to requested target

https://mcreator.net/support/knowledgebase -> Gradle: ValidatorException: PKIX path building failed

And why can I succeed in making Add-on workspace setup but not Java mod?

It is a fundamentally different setup. Add-ons are not Java based