Duplicate version number:
Can be confirmed by: You checking the in game changelog button being greyed out. Not able to click it. Or in the "Factorio-current.log". At the bottom of the file with your mod name and a parser error like this one:
198.853 Error ModInfoPane.cpp:500: Failed to parse changelog for mod planetaris-arig: invalid changelog file, error on line 9, duplicate Date: line or duplicate Version: line.
For more parser info
https://lua-api.factorio.com/latest/auxiliary/changelog-format.html
Version: 1.1.0
Date: 2025-12-07
Version: 1.1.0
Date: 2025-12-03
