How solve error?

ERROR: appinventor/ai_ashawky2313/PhTraining/Medical_Tests.yail line 4652: evaluating syntax transformer 'gen-simple-component-type' threw Argument #1 ((quasiquote s)) to 'symbol->string' has wrong type (gnu.lists.PairWithPosition) (gnu.lists.PairWithPosition cannot be cast to gnu.mapping.Symbol)

That's a new one.

What version of the Companion are you using?
Which OS? (iOS / Android)

Where was your app born?

ANy red/yellow errors in the Blocks Editor?

How many blocks in how many Screens?