forty-cdk
llms.txt

Error codes

FORCDK-TOAST-003

Warned by forty-cdk/toast, in development builds only. 

[forty-cdk/toast] FORCDK-TOAST-003: A <for-toast-viewport> for region "{value}" is already mounted.

Cause

This one stays inactive so the region does not render duplicate toasts.

Fix

Give it a distinct [region] for an independent toast region.

Where it comes from

projects/forty-cdk/toast/src/toast-viewport.ts:395

Read the toast documentation

A value in braces is filled in when the message is reported, so the sentence in your console names the piece, input or value that failed.