Make sure both temp folders exist

Fixes #204

scripts/model_keyword_support.py

@@ -15,7 +15,7 @@ hash_dict = {}
 
 
 def load_hash_cache():
-    with open(known_hashes_file, "r") as file:
+    with open(known_hashes_file, "r", encoding="utf-8") as file:
         for line in file:
             name, hash, mtime = line.replace("\n", "").split(",")
             hash_dict[name] = (hash, mtime)

scripts/shared_paths.py

@@ -44,4 +44,10 @@ WILDCARD_EXT_PATHS = find_ext_wildcard_paths()
 
 # The path to the temporary files
 STATIC_TEMP_PATH = FILE_DIR.joinpath('tmp') # In the webui root, on windows it exists by default, on linux it doesn't
-TEMP_PATH = TAGS_PATH.joinpath('temp') # Extension specific temp files
+TEMP_PATH = TAGS_PATH.joinpath('temp') # Extension specific temp files
+
+# Make sure these folders exist
+if not TEMP_PATH.exists():
+    TEMP_PATH.mkdir()
+if not STATIC_TEMP_PATH.exists():
+    STATIC_TEMP_PATH.mkdir()