only allow ascii filename; replace slashes in filename as this would lead to folder creation

SaveMyPlaylist.py

@@ -60,7 +60,7 @@ class SaveMyPlaylist:
     TITLE = 1
     VIDEO_ID = 2
 
-    ILLEGAL_CHARS = ['NUL', '\',''//', ':', '*', '"', '<', '>', '|']
+    ILLEGAL_CHARS = ['NUL', '\\', '/', ':', '*', '"', '<', '>', '|']
 
     def __init__(self, apiKey, playlistId):
         with open('version.json', 'r', encoding='utf-8') as f:
@@ -174,6 +174,11 @@ class SaveMyPlaylist:
         for char in self.ILLEGAL_CHARS:
             fileName = fileName.replace(char, '')
 
+        try:
+            fileName = fileName.encode('ascii', 'ignore').decode('ascii')
+        except Exception as e:
+            logger.error(f'Error while converting filenem "{fileName}" to ascii', exc_info=e)
+
         return fileName