Code:
19:42:50.876: [Lua: lower-thirds_hotkeys.lua] Error opening file: (null)
Scripts controls located in main menu
Tools > Scripts (remove script that is not in use, thus OBS will not attempt to load it).
Code:
19:42:50.914: [Loaded global audio device]: 'Desktop Audio'
19:42:50.914: - filter: 'VST 2.x Plug-in' (vst_filter)
...
You have VST filter applied to global audio source and to many other audio sources. At properties of the filter, in OBS, there is option to open interface of the plugin when it is active. Maybe you are looking for this option?