Error Forge Modding

[Cesco]

the terminal get me :     "Cannot find JAR 'kotlin-stdlib-jdk7-1.6.21.jar' required by module 'gradle-kotlin-dsl' using classpath or distribution directory 'C:\Users\franc\.gradle\wrapper\dists\gradle-7.5.1-bin\7jzzequgds1hbszbhq3npc5ng\gradle-7.5.1'"
 

[warjort]

That's not a forge issue. It a gradle issue.

Something is wrong with your build.gradle.kts or your gradle installation/cache which means it cannot find/download that jar

Since you don't post that file it's impossible to say. And using the gradle support forums is more likely to get you better help anyway.