All of the previously loaded' error-messages suggest that somehow you have duplicates of those extensions installed in different locations, both of which SketchUp loads from.
Several of those causing errors are by other authors and are from other sources than SCF, and even some su_ shipped-extensions...
How are you installing your extensions ?
If you are copying files from one SketchUp version's Plugins folder into another. then it's a recipe for chaos.
If you download them from our PluginStore as RBZs and then use the Extension Manager to install them, then they automatically install in your default Plugins folder, from which SketchUp loads any extension .RB files it finds at startup. In your case it's
C:/Users/MSonmez/AppData/Roaming/SketchUp/SketchUp 2026/SketchUp/Plugins
If you use the ExtensionStore's dialog to auto-install them, that works without the need for the RBZ step, but they default to install in the same default Plugins folder.
However, you can opt to have your own personal destination folder, chosen and remembered with the ExtensionStore's Settings > Paths option. It's really only useful for those with a centralized folder used across SketchUp versions - you need to set up this alternative path using Fredo's AdditionalPluginsFolder tool.
An alternative path offered might be the Plugins folder in the ProgramData path, but this is only used for extensions shared between several users on the same computer, unlike your own user's Plugins folder personal to your login: it's typically used by more complex extensions like renderers etc. It does load its .RB files before the default Plugins folder so it could explain the duplication, but why all of your extensions seem to have arrived in there is a very unlikely mystery. It's not normally listed unless some previous installation [like a renderer] has made the Plugins folder for its .RB and subfolder...
If you can check for multiple Plugins folders and their duplicated contents it will help. Try to ensure only one version of each .RB and it's matching subfolder exist in any likely-to-be-loading Plugins folder.
Running this text in the Ruby Console will give you a list of all file-paths that are loaded from - BUT only the default ../AppData../Plugings would be normally listed in the ExtensionStore's Paths, never put extensions into another of these folders, unless you are really sure of what you are doing -
$LOAD_PATH
Please report back...