Submitting work for Filecoin microgrant fails

[nya-elimu]

Describe the bug
Website bug: At https://gitcoin.co/issue/fulfill?pk=26624&network=mainnet, I get the error "Enter a valid FIL" address when trying to submit work.

To Reproduce
Go to https://gitcoin.co/issue/filecoin-project/devgrants/326/100026624, and submit the work. Type a valid FIL address, and submit the form.

Expected behavior

A valid FIL address should be accepted.

Screenshots

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Additional context

• See [Gitcoin] Microgrants filecoin-project/devgrants#326 (comment)

CC @lucasespinosa28 @vvkio @octavioamu