I am trying to install SBT for scala developing. I follow the guid in Installing sbt manually
The errors show as follows
:: problems summary ::
:::: WARNINGS
module not found: org.scala-sbt#sbt;0.13.7
==== local: tried
/home/nan/.ivy2/local/org.scala-sbt/sbt/0.13.7/ivys/ivy.xml
-- artifact org.scala-sbt#sbt;0.13.7!sbt.jar:
/home/nan/.ivy2/local/org.scala-sbt/sbt/0.13.7/jars/sbt.jar
==== typesafe-ivy-releases: tried
https://repo.typesafe.com/typesafe/ivy-releases/org.scala-sbt/sbt/0.13.7/ivys/ivy.xml
==== Maven Central: tried
https://repo1.maven.org/maven2/org/scala-sbt/sbt/0.13.7/sbt-0.13.7.pom
-- artifact org.scala-sbt#sbt;0.13.7!sbt.jar:
https://repo1.maven.org/maven2/org/scala-sbt/sbt/0.13.7/sbt-0.13.7.jar
::::::::::::::::::::::::::::::::::::::::::::::
:: UNRESOLVED DEPENDENCIES ::
::::::::::::::::::::::::::::::::::::::::::::::
:: org.scala-sbt#sbt;0.13.7: not found
::::::::::::::::::::::::::::::::::::::::::::
:::::: ERRORS
Server access Error: Connection refused url=https://repo.typesafe.com/typesafe/ivy-releases/org.scala-sbt/sbt/0.13.7/ivys/ivy.xml
Server access Error: Connection refused url=https://repo1.maven.org/maven2/org/scala-sbt/sbt/0.13.7/sbt-0.13.7.pom
Server access Error: Connection refused url=https://repo1.maven.org/maven2/org/scala-sbt/sbt/0.13.7/sbt-0.13.7.jar
:: USE VERBOSE OR DEBUG MESSAGE LEVEL FOR MORE DETAILS
unresolved dependency: org.scala-sbt#sbt;0.13.7: not found
Error during sbt execution: Error retrieving required libraries (see /home/nan/.sbt/boot/update.log for complete log)
Error: Could not retrieve sbt 0.13.7
The link "https://repo1.maven.org/maven2/org/scala-sbt/sbt/0.13.7/sbt-0.13.7.jar" cannot be accessed even in the browser. Are there any solutions?