The report means the Dougou project resource looks more complex...

The report means the Dougou project resource looks more complex and less homogeneous than you'd hope. With more carnellite than you'd want. Which makes whole areas unusable by their intended process. As I understand it.

And if this was the project that is core to their future that would be a problem.

Good news is that it's not.

Dougou is pre-FS.
This report is part of their pre-feasibility work for Dougou. It has identified something of a flaw in the Dougou project. Which may not be the end of it, but it will need further work to assess.

Meanwhile, their Kopa project has already gone past feasibility study, passed the definitive feasibility study and is proceeding to finance. It is Kopa, not Dougou, that the analyst forecasts and the big upside for this stock are based on.