> AeroLib is currently not maintained and could be outdated/broken
If you still want it:
https://github.com/J-Flight/AeroLib
As for you error.. That's another include. SRL. The two should not be compatible to run together, so I assume that's from another script.
Old SRL is located at https://github.com/SRL/SRL, new SRL is located here: https://github.com/villavu/SRL-Development
These includes are outdated by several years, except for SRL-development. Flight corrently maintains SRL-F, also found on his github.