I was also having issues with this, with Space Exploration, Extended Descriptions, and Mining Drones Remastered 2.0. I ended up removing Extended Descriptions & Mining Drones, then running this command:
/c game.player.force.technologies['solar-productivity-4'].researched=false; game.player.force.set_saved_technology_progress('solar-productivity-4', 0.999)
Then, I was able to re-research Solar Productivity 4 (for a microscopic amount of research), causing all solar panels to update again. Make sure to use the productivity level that you have researched so far - so if the research says "Solar Productivity 11" that means you don't have 11 - so unresearch productivity 10, then research it again.
It appears that the panels that are correct say "Solar Productivity" in blue, with 'Unknown key: "item-name.se-space-solar-panel-2"'