It works as a project file and also when the exe is in the same directory as the rest of the project files (maybe I should've just uploaded that instead...)
If any kind soul would like to help us.
Errors from debug when you press start. Believe this is the line of code that executes before the errors happen.
get_tree().change_scene_to_file("res://world.tscn")
WARNING: 'res://characters/940_theta.tscn': In external resource #1, invalid UID: 'uid://dnqgjkyepvb6g' - using text path instead: 'res://assets/sprites/940 Walk Cycle.png'.
at: open (core/io/resource_format_binary.cpp:1092)
GDScript backtrace (most recent call first):
[0] _on_audio_stream_player_2_finished (res://main_menu.gd:12)
ERROR: No loader found for resource: res://assets/sprites/940 Walk Cycle.png (expected type: Texture2D)
at: (core/io/resource_loader.cpp:358)
GDScript backtrace (most recent call first):
[0] _on_audio_stream_player_2_finished (res://main_menu.gd:12)
ERROR: Can't load dependency: 'res://assets/sprites/940 Walk Cycle.png'.
at: (core/io/resource_format_binary.cpp:459)
GDScript backtrace (most recent call first):
[0] _on_audio_stream_player_2_finished (res://main_menu.gd:12)
ERROR: Failed loading resource: res://.godot/exported/133200997/export-d74defc23978763fb192c070ecdb579c-940_theta.scn.
at: (core/io/resource_loader.cpp:343)
GDScript backtrace (most recent call first):
[0] _on_audio_stream_player_2_finished (res://main_menu.gd:12)
ERROR: Can't load dependency: 'res://characters/940_theta.tscn'.
at: (core/io/resource_format_binary.cpp:459)
GDScript backtrace (most recent call first):
[0] _on_audio_stream_player_2_finished (res://main_menu.gd:12)
ERROR: Error when trying to parse Variant.
at: (core/io/resource_format_binary.cpp:503)
GDScript backtrace (most recent call first):
[0] _on_audio_stream_player_2_finished (res://main_menu.gd:12)
ERROR: Error when trying to parse Variant.
at: (core/io/resource_format_binary.cpp:490)
GDScript backtrace (most recent call first):
[0] _on_audio_stream_player_2_finished (res://main_menu.gd:12)
ERROR: Failed loading resource: res://.godot/exported/133200997/export-76e0adcbc83681695885bae615f516ae-world.scn.
at: (core/io/resource_loader.cpp:343)
GDScript backtrace (most recent call first):
[0] _on_audio_stream_player_2_finished (res://main_menu.gd:12)