fix real time gui bug

Author: Plachtaa

.gitignore

@@ -20,3 +20,4 @@ test_waves/
 reconstructed/
 .python-version
 ruff.log
+/configs/inuse/

real-time-gui.py

@@ -317,6 +317,7 @@ def __init__(self) -> None:
 
         def load(self):
             try:
+                os.makedirs("configs/inuse", exist_ok=True)
                 if not os.path.exists("configs/inuse/config.json"):
                     shutil.copy("configs/config.json", "configs/inuse/config.json")
                 with open("configs/inuse/config.json", "r") as j: