I could not find how to open a closed issue... so this is the link for the original issue opened for 6.1.3... and it still reproduces on 6.1.4
jeremylong/DependencyCheck#3240
this is the error log from 6.1.4
https://gist.github.com/wagde-orca/63cb4aae1df637081c5facb23fdc84c2