400: Invalid label name - invalidArgument for multiple labels

[Stefano]

Hi, when I try to recover I have this error.

Creating label Da leggere                                                       
400: Invalid label name - invalidArgument

I tried

--extra-reserved-labels "da leggere"

But now I get

leggereg label Da                                                               
400: Invalid label name - invalidArgument

How cat I solve? Can I pass multiple reserved labels?

[MagnumChaos17]

Same issue here, restoring from Takeout mbox file.

Creating label Enviado
400: Invalid label name - invalidArgument

The workaround seems to use the --strip-labels and --label-restored gyb-restored options and loose source labels...