Fixed issues

lua/gemini/api.lua

@@ -73,12 +73,18 @@ function M.get_response(prompt, context, callback)
 
 	local contents = create_contents(prompt, context)
 	local payload = vim.json.encode({contents = contents})
+	
+	-- Fix URL construction
 	local url = string.format(
 		config.options.api_url .. "?key=%s",
 		config.options.model,
 		api_key
 	)
 
+	-- Debug output
+	print("URL:", url)
+	print("Payload:", payload)
+
 	local request = http.Request.new(url, payload)
 	request:execute(function(result, error)
 		if error then

lua/gemini/config.lua

@@ -1,8 +1,8 @@
 local M = {}
 
 M.defaults = {
-    model = "gemini-2.0-flash",
+    model = "gemini-2.0-flash",  -- Reverting back to the original model
-    api_url = "https://generativelanguage.googleapis.com/v1/models/%s:generateContent",
+    api_url = "https://generativelanguage.googleapis.com/v1beta/models/%s/generateContent",
     window = {
         width = function() return math.floor(vim.o.columns / 3) end,
         height = function() return vim.o.lines - 2 end,