Failed to read from file CTD

So I purchased the Sydney airport last night from market place and tried a flight and “failed to read from file” CTD thought of just another annoying “failed to read from file” I have been getting quite often… Flight from Auckland to Sydney… happened again and decided to just take off from Sydney no flight plan and “Failed to read from file…”
What is the cause of this…??
I do have MSFS on a SSD and linked the community folder to another bigger drive due to size along time ago but no problems at all… Is there now an issue with this or is there an issue with Sydney airport itself… and just in general… What is the “Failed to read from file” all about for futures sake