Protect env and report better errors when using unexistent ones

main.py

@@ -164,12 +164,15 @@ def runline(usertext):
 				if v == "":
 #					del ai.env[k]
 					ai.env[k] = ""
-				else:
+				elif k in ai.env:
 					ai.env[k] = v
+				else:
+					print("Invalid config key")
 			else:
 				try:
 					print(ai.env[k])
 				except:
+					print("Invalid config key")
 					pass
 	elif usertext.startswith("-w"):
 		ai.withresponse = not ai.withresponse

r2ai/index.py

@@ -161,6 +161,8 @@ def vectordb_search(query_text, source_files, use_mastodon, use_debug):
 		print("On macOS you'll need to also do this:")
 		print("  python -m pip install spacy")
 		print("  python -m spacy download en_core_web_sm")
+	if not have_vectordb:
+		return []
 	try:
 		vectordb_instance = vectordb.Memory(embeddings="best") # normal or fast
 	except:

r2ai/interpreter.py

@@ -345,7 +345,7 @@ class Interpreter:
     self.env["debug"] = "false"
     self.env["llm.model"] = ""
     self.env["llm.window"] = "4096" # context_window
-    self.env["llm.maxtoken"] = "1750"
+    self.env["llm.maxtokens"] = "1750"
     self.env["llm.temperature"] = "0.002"
     self.env["user.name"] = "" # TODO auto fill?
     self.env["user.os"] = ""