Error handling if Pi-hole password is wrong

main.py

@@ -58,7 +58,11 @@ def loginToPihole(apiurl, phpassword):
     loginrq = session.post(url,data={"pw": phpassword})
     phpsessid = (str(loginrq.cookies.get_dict()["PHPSESSID"]))
     regex = r'(<div id="token" hidden>)(\S+)(<\/div>)'
-    token = re.findall(regex, loginrq.text, re.MULTILINE)[0][1]
+    try:
+        token = re.findall(regex, loginrq.text, re.MULTILINE)[0][1]
+    except IndexError:
+        log.error(f"An authentication token wasn't returned from the Pi-hole server at {apiurl} - your password is likely incorrect!")
+        exit()
     log.debug("phpsessid: " + phpsessid + " Token: "+ token)
     return {'phpsessid': phpsessid, "csrftoken": token}