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Web server is returning an unknown error Error code 520

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Also for the record, I assume that it was an honest error on the part of @sh97

We will rectify this error as earliest as possible.

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Still valid. Any error with order cannot be processed is usually due to something about your information scoring low with the Fraud API.

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We have had same issue with raid1, ended up making a non raid drive/volume 2G for efi, and the rest for raid1. Only in this way then the grub-dumy error was gone.

But, making it Raid-1 (the EFI Partition) throws the same error as the screenshot of original post.

operating in read-only mode. This is a familiar error, but the circumstances this time are unusual. Despite the mdadm RAID failing, the partition on the node remains intact, even though no HDDs are d

This time it proceeded, installed the base system & others on, while installing GRUB, it showed the below error:

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