Help me with this error! Attempt to invoke YailList.size

alraakib · September 22, 2021, 4:03pm

Can someone explain me what is the error about?

I created a function which works with list item. Sometimes it works good but sometime the error appears.

dora_paz · September 22, 2021, 4:09pm

That error means that you are trying to create a list out of nothing. How do you create your list?

alraakib · September 22, 2021, 5:05pm

At first I copy the list into a local variable and then do basic stuffs with that variable.

dora_paz · September 22, 2021, 5:06pm

Post a screenshot of your blocks

alraakib · September 22, 2021, 5:27pm

Still-learning · September 22, 2021, 5:29pm

Did you debug each tinyDB block?

alraakib · September 22, 2021, 5:30pm

Yes. Sometimes they works and sometimes not.

dora_paz · September 22, 2021, 5:32pm

Try replacing empty string with empty list when you call tinyDB and see if it works

Taifun · September 22, 2021, 5:52pm

if you are using the TinyDB.GetValue block you always have to think about which value should be returned in case the tag is not in TinyDB (for example after starting the app the first time)

for example if you use the index in list block on a value from TinyDB, what should be the correct value if the tag is not there? an empty string might be wrong…
Unbenannt

Taifun