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I'm trying to use this guide to create an NFT to test with my anchor program. When I attempt to mint the NFT, I am met with the following error.

FailedToSendTransactionError: The transaction could not be sent successfully to the network. Please check the underlying error below for more details.

Caused By: Error: failed to send transaction: Transaction simulation failed: Attempt to load a program that does not exist

my connection is program.provider.connection, and I'm not sure what to do differently.

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Most likely, the Metaplex metadata program is not present in your testing environment. You can dump the program by running:

solana program dump metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s mpl_token_metadata.so

And then add it to a test validator by running:

solana-test-validator --bpf-program metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s mpl_token_metadata.so
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