#RC#
A transaction that remains in the mempool for too long often indicates a low priority fee. Always verify the mpl-token-metadata contract address on a block explorer before confirming a trade. To handle the conflict related to 142, make sure only one web3 extension is enabled.
The link between the frontend and the contract can be affected by your local DNS settings. The mpl-token-metadata contracts might be temporarily “paused” triggering 142 for maintenance. The official project documentation is the best place to find detailed troubleshooting steps.
Ensure your environment is secure never input your keys to a site while fixing 142. The protocol might have a “safety lock” that was triggered by the 142 revert. Layer 2 network delays can sometimes lead to “ghost” transactions that appear later.