Received status code 500 from server: Internal Server Error

[jincheng sun]

Hi all,
I got the 500 error, when do the PreCommit. We can run the following
command to see the detail:

./gradlew :sdks:python:test-suites:portable:py2:flinkValidatesRunner

>>
Task :model:pipeline:compileJava FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':model:pipeline:compileJava'.
> Could not resolve all files for configuration
':model:pipeline:errorprone'.
   > Could not resolve
com.google.errorprone:error_prone_core:latest.release.
     Required by:
         project :model:pipeline
      > Failed to list versions for com.google.errorprone:error_prone_core.
         > Unable to load Maven meta-data from
https://oss.sonatype.org/content/repositories/staging/com/google/errorprone/error_prone_core/maven-metadata.xml
.
            > Could not HEAD '
https://oss.sonatype.org/content/repositories/staging/com/google/errorprone/error_prone_core/maven-metadata.xml'.
Received status code 500 from server: Internal Server Error

I appreciate if anyone help solve the server problem！

Best,
Jincheng