Hi,
I am heaving the same problem. Our company have the Rockwell licence FT Historian that is Osisoft PI. Rockwell is on FT Hist v. 6.00.00 and PI JBC Driver 2017. From documentation this version is supported for Java 8. I guess this is the problem since Igniton 8 is running Java 11, or??
Osisoft have released a 2018 version, that support Java 8, 9 and 10 and from PI Square Community I have read it also work with Java 11.
I end up installing SQL Server Express and adding PI Historian as a linked server via PI Historian OLEDB and running queries form Ignition over SQL Server.