tests should not generate console errors

[dkent600]

When I run Alchemy tests in "rewards.ts", not headless, so I can see the browser, I see in the browser console the errors below.

The line that must be generating the console error is in arc.js, arc.ts:

      if (abiName === 'GEN') {
        abiName = 'DAOToken'
      }
      let artefact = abis[version][abiName || '']
      if (artefact.rootVersion) {
        artefact = abis[artefact.rootVersion][abiName || '']
      }