Your workspace contains mod elements that dont compile and could not be exported No mod file generated.

I get this error after trying to export my mod

FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred configuring root project 'magic_world'.
> Could not resolve all artifacts for configuration ':classpath'.
> Could not download fastutil-8.3.1.jar (it.unimi.dsi:fastutil:8.3.1)
> Could not get resource 'https://maven.minecraftforge.net/it/unimi/dsi/fastutil/8.3.1/fastutil-8…'.
> Premature end of Content-Length delimited message body (expected: 19,011,744; received: 14,499,328)
* 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.