Studio Problem? [HELP ME] [CRITICAL]

THIS IS NOT OFFTOPIC! IT IS RELATED TO ROBLOX AND SCRIPTING!

I got these errors today:

15:32:47.555 - Use the new http api: no
15:32:49.987 - [string "self = PluginManager():CreatePlugin()..."]:10: Unknown library RbxGui
15:32:49.997 - Script '[string "self = PluginManager():CreatePlugin()..."]', Line 10
15:32:49.998 - Script 'Plugin_144441856.LightPlacer.Lua', Line 1
15:32:49.998 - Stack End
Loading Cutscene Editor...
15:32:50.075 - Successfully opened file - 
15:32:51.660 - Error loading core script StarterScript
15:32:51.666 - DataModel Loading http://www.roblox.com/asset/?id=166707471
Ro-Defender Plugin has loaded
15:32:51.849 - C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0:129: attempt to index local 'RbxGui' (a nil value)
15:32:51.849 - Stack Begin
15:32:51.850 - Script 'C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0', Line 129
15:32:51.850 - Stack End
15:32:51.850 - C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0:236: attempt to index local 'RbxGui' (a nil value)
15:32:51.850 - Stack Begin
15:32:51.851 - Script 'C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0', Line 236
15:32:51.851 - Stack End
15:32:51.851 - C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0:198: attempt to index local 'RbxGui' (a nil value)
15:32:51.851 - Stack Begin
15:32:51.852 - Script 'C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0', Line 198
15:32:51.852 - Stack End
15:32:51.852 - Plugin_142296237.CutsceneEdit.Plugin:89: Cutscene Editor failed to load!
15:32:51.852 - Script 'Plugin_142296237.CutsceneEdit.Plugin', Line 89
15:32:51.853 - Stack End
15:32:51.853 - C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0:276: attempt to index local 'RbxGui' (a nil value)
15:32:51.853 - Stack Begin
15:32:51.853 - Script 'C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0', Line 276
15:32:51.854 - Stack End
15:32:51.854 - C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0:502: attempt to index local 'RbxGui' (a nil value)
15:32:51.854 - Stack Begin
15:32:51.854 - Script 'C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0', Line 502
15:32:51.855 - Stack End
15:32:51.855 - C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0:172: attempt to index local 'RbxGui' (a nil value)
15:32:51.855 - Stack Begin
15:32:51.855 - Script 'C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0', Line 172
15:32:51.856 - Stack End
15:32:51.856 - C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0:253: attempt to index local 'RbxGui' (a nil value)
15:32:51.856 - Stack Begin
15:32:51.856 - Script 'C:/Users/Riley/AppData/Local/Roblox/Versions/version-0c30d0', Line 253
15:32:51.857 - Stack End
15:32:51.857 - C:/Users/Riley/AppData/Local/Roblox/Versions/version-0c30d0:525: attempt to index local 'RbxGui' (a nil value)
15:32:51.857 - Stack Begin
15:32:51.857 - Script 'C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0', Line 525
15:32:51.858 - Stack End
15:32:51.858 - C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0:722: attempt to index local 'RbxGui' (a nil value)
15:32:51.858 - Stack Begin
15:32:51.858 - Script 'C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0', Line 722
15:32:51.859 - Stack End

I don't know hat is up with C:/Users/R****/AppData/Local/Roblox/Versions/version-0c30d0:722: attempt to index local 'RbxGui' (a nil value) and Error loading core script StarterScript sounds important. All I know that is I can't view the dev console in studio, see the health gui, or see the backpack gui. Please help me and im sick of you guys -1 on my posts, all I'm trying to do here is ask a simple question.

Ignore this problem, you will not find the backpack gui, health gui, or playerlist gui unless you are playing in Solo mode. If you are in solo mode and this is happening, still ignore it, ROBLOX made the error and will eventually fix it.

Meanwhile, people are downvoting your posts for spam or off topic content. Scripting Helpers solves scripting errors, not ROBLOX created errors.