HttpException: HTTP 403 at discovering or adding mods

[MisterNoNameLP]

If i try to discover mods i get the error HttpException: HTTP 403.
Adding mods do not work either

modsman version: 0.32.1
minecraft version: 1.12.2 (forge)

Error at trying to add a mod:

Exception in thread "main" retrofit2.HttpException: HTTP 403 
	at com.jakewharton.retrofit2.adapter.kotlin.coroutines.CoroutineCallAdapterFactory$BodyCallAdapter$adapt$2.onResponse(CoroutineCallAdapterFactory.kt:104)
	at retrofit2.OkHttpCall$1.onResponse(OkHttpCall.java:129)
	at okhttp3.RealCall$AsyncCall.execute(RealCall.java:206)
	at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:833)```