Go to the ppa archive, and you can see yourself that 'l10n' is only generated for 'en'
As your language is not 'en' you indeed get the error. Either switch your system to 'en' or simply ignore that cosmetic problem (its only a ppa, not a genuine ubuntu archive)
Go to the ppa archive, and you can see yourself that 'l10n' is only generated for 'en'
As your language is not 'en' you indeed get the error. Either switch your system to 'en' or simply ignore that cosmetic problem (its only a ppa, not a genuine ubuntu archive)