i dont know where this error message is coming from

[codeincraft]

[eatmyaspirin]

from what I can see apparently the text widget you use in your "messagebubbles" isnt actually getting any data ie. the string variable is null
from what I can see, you did
final messageText = message.data['text'];
final messageSender = message.data['sender'];
using the .get method on the "message" object should fix it :
final messageText = message.get('text');
final messageSender = message.get('sender');

alternatively
final messageText = message['text'];
final messageSender = message['sender'];

[codeincraft]

yeah, thanks to you all for your comments, actually I already fixed the problem. it was actually coming from my firebase set up. I was passing a null argument into my fire base