unexpected token ‘:’, expected one of token or sequence: ] ? or . -> and Motoko(M0001)

I’m new to Motoko and I tried this but the syntax seems to fail

unexpected token ‘:’, expected one of token or sequence: ] ? or . -> and Motoko(M0001)

I’m new to Motoko and I tried this but the syntax seems to fail

unexpected token ‘:’, expected one of token or sequence: ] ? or . -> and Motoko(M0001)

I’m new to Motoko and I tried this but the syntax seems to fail