Compiling your contracts...

Error: Unsupported compiler: optimizer
at /usr/local/lib/node_modules/truffle/build/webpack:/packages/workflow-compile/index.js:28:1
at Array.map ()
at compile (/usr/local/lib/node_modules/truffle/build/webpack:/packages/workflow-compile/index.js:26:1)
at Object.compile (/usr/local/lib/node_modules/truffle/build/webpack:/packages/workflow-compile/index.js:68:47)
at Object.run (/usr/local/lib/node_modules/truffle/build/webpack:/packages/core/lib/commands/compile.js:75:1)
at Command.run (/usr/local/lib/node_modules/truffle/build/webpack:/packages/core/lib/command.js:183:1)
Truffle v5.4.22 (core: 5.4.22)
Node v14.17.6

i try to fix in truffle-config.js , like this:
compilers: {
solc: {
version: "^0.5.0" ,
},
optimizer: {
enabled: true,
runs: 200
},
},
but still failed, what should i do?

https://opensea.io/assets/matic/0x2953399124f0cbb46d2cbacd8a89cf0599974963/82574862346960526921724509551538428014976136759639907893085019334205799137294

[email protected]
leo moreno kukolimfotos
leo mascadiz

https://opensea.io/assets/matic/0x2953399124f0cbb46d2cbacd8a89cf0599974963/26148355682927667539901813785675002717895539541186637832780795779756981223425

Thank you for the code.

I have used the exact code to mint some hash values on my ubuntu server. Users can easily mint the hash values from the website.

Now I want users from other websites to mint the hash values using JavaScript.
How can they call this mint function remotely using JavaScript?
Maybe use a API POST?

But how do we integrate the call?
Should I have a separate process running to listen for these API POSTs?
And how do these API POSTs call the mint function?

Thanking you in advance.