fix: initialize tools and functions state

Author: Algorithm5838

backend/open_webui/main.py

@@ -474,6 +474,18 @@ async def lifespan(app: FastAPI):
 
 app.state.TERMINAL_SERVERS = []
 
+########################################
+#
+# TOOLS & FUNCTIONS
+#
+########################################
+
+app.state.TOOLS = {}
+app.state.TOOL_CONTENTS = {}
+
+app.state.FUNCTIONS = {}
+app.state.FUNCTION_CONTENTS = {}
+
 ########################################
 #
 # DIRECT CONNECTIONS