Spark has stopped being built since yesterday. I tried building Spark 3.0.0 (beta) from April 2021 and it gave me this error too.And a couple of days ago everything was fine.
[INFO] 3 errors
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 16.179 s
[INFO] Finished at: 2021-07-14T16:34:39+03:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile (default-compile) on project spark-core: Compilation failure: Compilation failure:
[ERROR] /C:/Users/Plyha/Downloads/Spark-3.0.0-beta/Spark-3.0.0-beta/core/src/main/java/org/jivesoftware/spark/Workspace.java:[46,40] package org.jivesoftware.smackx.debugger does not exist
[ERROR] /C:/Users/Plyha/Downloads/Spark-3.0.0-beta/Spark-3.0.0-beta/core/src/main/java/org/jivesoftware/spark/Workspace.java:[192,17] cannot find symbol
[ERROR] symbol: class EnhancedDebuggerWindow
[ERROR] /C:/Users/Plyha/Downloads/Spark-3.0.0-beta/Spark-3.0.0-beta/core/src/main/java/org/jivesoftware/spark/Workspace.java:[192,49] cannot find symbol
[ERROR] symbol: variable EnhancedDebuggerWindow
[ERROR] -> [Help 1]