ignore-errors

(ignore-errors form...)

Evaluates the forms and returns the value of the last one; when an error is signaled, returns nil instead (with the condition object as the syntactic-tier secondary value). Sugar over (handler-case (progn form...) (error (c) (values nil c))) — see handler-case.

Like handler-case it is supported on the interpreter and the JVM backend only; the WASM compilers reject it.