Не удалось загрузить следующие моды: File tech_tree_plus/graphics/entity/advanced_solar_panel.png not found

The following mods could not be loaded: File tech_tree_plus/graphics/entity/advanced_solar_panel.png not found

I only installed this mod, and I got this error

Thank you for posting this.
When migrating i forgot to change the "A" into "a" in "advanced_solar_panel.png"

Now fixed in 1.4.1
If you find any more promels, let me know, because on my end, the game loads perfectly...

Piggybacking off of this, is there a capitalization issue with this "missing file graphics/entity/long_range_laser_turret/Long_range_laser_turret_extension.png" error?

EDIT: Addendum, I manually changed the file name from "long" to "Long" and the game loads.

Thank you for that.
If you find any further ones, please let me know.

Corrected in version 1.4.2