Your current profile may have had Local Mods installed.So you need to install SCS Unit Check Bypass Plugin,You can to download it at here: SCS Unit Check Bypass Plugin
Tutorial on how to install it:
1. Open Steam
2.Right click ETS2 or ATS and go to Manage > Browse Local Files
3.Open bin > win_x64
4.Create a folder called Plugins
5.Inside Plugins, place the ScsUnitTypeCheckBypass.dll plugin in the folder
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