Silicon tetrachloride used for silicon production is toxic and has to handled carefully.
The main point is that, if Europe wants to invest more in solar power, it should also do the manufacturing in Europe and waste disposal in Europe.
For example, nuclear power is often sold as a plant that just sits there churning out zero-emissions power for 50 years from a few tons of super energy dense fuel (such as from the above commenter). Without acknowledging that fuel needs to be enriched from intensive and environmentally destructive mining of raw uranium ore. Which comes with risks to workers and possible contamination of groundwater to nearby communities, etc. Or the carbon impacts of the massive amounts of concrete/steel/etc that are required to build the plant, or the opportunity costs of spending tens of billions on a plant that will require continuing to burn natural gas and coal for another 10-20+ years until it comes online as a replacement, etc.
Otherwise it's just special pleading to apply a different standard that exaggerates the negative externalities of solar + batteries.