There was a problem downloading openhab-2.5.2.zip from the download link

[TxBase]

'https://bintray.com/openhab/mvn/download_file?file_path=org/openhab/distro/openhab/2.5.2/openhab-2.5.2.zip'
redirect to
'https://jfrog.com/distribution/?bintrayRD=1&file_path=org/openhab/distro/openhab/2.5.2/openhab-2.5.2.zip'
where you can't download the file.

[hmerk]

As should be known, Bintray service have been shut down last year, so only openHAB 2 version available is 2.5.12
https://openhab.jfrog.io/artifactory/libs-release-local/org/openhab/distro/openhab/2.5.12/openhab-2.5.12.zip