#RC#
Most minor errors can be traced back to outdated software or incorrect configuration files. Several reports have highlighted a temporary «state lock» in metamask-extension . To handle the conflict , ensure that no other wallet tabs are active.
A common mistake is attempting a transaction while the network is forking. The metamask-extension interface might require you to re-approve the token spend limit . Check the official developer blog for in-depth explanations of recent protocol upgrades.
Ensure your keys are safe for any reason. The error could also be the result of an incompatibility with the latest RPC standard. Check the status of the sequencer when the network seems to be stuck.