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Firebase err

I was trying from a day but firebase is showing data of none See this code is anything wrong.??? https://code.sololearn.com/WkelqU131ng6/?ref=app

firebasedb
28th Sep 2020, 1:21 PM
S.G.INGALE
S.G.INGALE - avatar
3 Answers
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It's only a try Nasif Rahman
28th Sep 2020, 2:02 PM
S.G.INGALE
S.G.INGALE - avatar
+ 2
Nasif Rahman pls tell me how you ? Done that your data is appeared ? How you done?
28th Sep 2020, 3:03 PM
S.G.INGALE
S.G.INGALE - avatar
+ 2
Ok
29th Sep 2020, 2:05 AM
S.G.INGALE
S.G.INGALE - avatar

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