Connection Error [403 Forbidden]

[zukashix]

So I am trying to download the SevTech: Ages modpack using URL (It does work with Project ID but not URL). I get a connection error window. Looking at the command prompt it says this error

org.jsoup.HttpStatusException: HTTP error fetching URL. Status=403, URL=https://www.curseforge.com/minecraft/modpacks/sevtech-ages

at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:760)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:705)
at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:295)
at org.jsoup.helper.HttpConnection.get(HttpConnection.java:284)
at org.jsoup.Jsoup.parse(Jsoup.java:183)
at com.github.franckyi.cmpdl.task.api.GetProjectIdTask.call0(GetProjectIdTask.java:28)
at com.github.franckyi.cmpdl.task.api.GetProjectIdTask.call0(GetProjectIdTask.java:15)
at com.github.franckyi.cmpdl.task.TaskBase.call(TaskBase.java:14)
at com.github.franckyi.cmpdl.task.TaskBase.call(TaskBase.java:9)
at javafx.concurrent.Task$TaskCallable.call(Task.java:1423)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

I'm not experienced at all in Java but in the python language, we use something called User Agent to make the website think we are a real web browser and not a third party application. Maybe try something like that?