Given string is empty or null problem

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#1

Screenshot_2021-10-13-18-56-54-203_com.powertb.sk
Screenshot_2021-10-13-18-56-54-203_com.powertb.sk1080×2400 111 KB

Screenshot_2021-10-13-13-33-51-348_com.powertb.sk
Screenshot_2021-10-13-13-33-51-348_com.powertb.sk1080×2400 128 KB

#2

Post a screenshot of your blocks. Somewhere you are using a math block and math blocks hates empty strings

image

#3

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#4

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#5

You asked about bad argument error > … which is caused by a math block in your code. For login I’m pretty sure that if you check community you will find many examples

#6

show your blocks to get out of this error