[FS#67] Squash errors Wrt1900acv1 mamba

[LEDE Bugs]

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FS#67 - Squash errors Wrt1900acv1 mamba
User who did this: Felix Fietkau (nbd)
Status: Unconfirmed -> Requires testing

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=67