Runtime Error : Given String is empty or null

Look here I had defined when sign in clicked on to open Google Sign in

I think here it says that it will store value from get name variable, it doesnā€™t meant it is declared,

Look 1st block
when signin click
do call Firebase_Authentication1.GoogleSign In

here is it declared to do when clicked on sign in??

You can see you used get name blocks which Wii return the value in it. To declare variable use the block named ā€œset get name toā€
As you didnā€™t declared it passed empty value which invoke error

I can give u .aia file
will u correct it for me please ???

Sorry for that currently I have my schools a lot of burdenā€¦

Here you have not declared it ,
To declare variable use set get name to block

Untitled

here is it declared to do when clicked on sign in??

No bro itā€™s not, to verify it you can find a block which says that ā€œset get name toā€ as you donā€™t have any kind of this block it mean you havenā€™t declared it


when Iā€™m clicking on down arrow itā€™s not showing any drop down list what to do??

Oh what I see is itā€™s not global variable itā€™s your firebase local variable

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The problem is that your firebase cannot return the value of ā€œget nameā€ or if it do it do it empty

then what I should do??

Can I get ur contact number ?
Iā€™m from Mirzapur, Uttar Pradesh, India.

You must check that do you have Name of users in you firebase data base???

This database file I have imported from json file download from project setting option of firebase.

is it ??
@Deepanshu_Arya

Capture

is it what u trying to say ?? help please

Is this set name a global variable??

no i picked it from ā€œā€œfirebase after login success blockā€ā€

What the actual problem I think is that the variable name in firebase login successful block is empty
IMG_20190407_095248

but if we sign through google, it uploads name, email, profile everything and store in firebase ? right ? so the name must be there and should i try to get email instead of name ?