marlin will not acknowledge the robin nano v3.1

[adowg67]

so I try to compile marlin but VS code "build" says I do not have a motherboard even thought it is listed in boards.h AND #define in Configuration.h. Im sotrry , but this isnt fun anymore/

[ellensp]

This is not a support channel

This Issue Queue is for Marlin Configuration bug reports and development-related issues, and we prefer not to handle user-support questions here. (As noted on this page.) For best results getting help with configuration and troubleshooting, please use the following resources:

• MarlinFW.org Marlin Documentation
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• Marlin specific Discord server. Join link: https://discord.gg/n5NJ59y

After seeking help from the community, if the consensus points to a bug in Marlin, then you should post a bug report.

[ellensp]

In saying that the most common cause of this error is user error

You should have:

define MOTHERBOARD BOARD_MKS_ROBIN_NANO_V3_1

not any of the following common errors:

define BOARD_MKS_ROBIN_NANO_V3_1

or

define MKS_ROBIN_NANO_V3_1

or

define MOTHERBOARD MKS_ROBIN_NANO_V3_1

or any other typos

Sometimes marlin can say no motherboard after a whole lot of other errors. You need to look at the first error first