System info: [Include Ethermint commit, operating system name, and other relevant details]

Steps to reproduce:

1. [First Step]

• run ./init.sh to start a local node

2. [Second Step]

• using metamask wallet to connect local node

3. [and so on...]

• sending any tx, set gasprice > 100000

Expected behavior: [What you expected to happen]
every thing goes well

Actual behavior: [What actually happened]
panic !

Additional info: [Include gist of relevant config, logs, etc.]