GraphQL requests don't work

[jubnzv]

devex uses GraphQL requests that don't work at the moment.

It is used in two places in the code: ContractTransactionsTab.tsx and AccountDetailsPage.tsx.

Both of them don't work in the web interface when requesting a list of transactions for a contract or an account.

For example:

• https://devex.zilliqa.com/address/zil1gkwt95a67lnpe774lcmz72y6ay4jh2asmmjw6u?network=https%3A%2F%2Fapi.zilliqa.com
• https://devex.zilliqa.com/address/zil10eg50z4f2tde84pl30hu35aw45pu2wksxzaug9?network=https%3A%2F%2Fapi.zilliqa.com

They fail with an error. If we print error.message, we'll see that there is a network error there. Chrome prints Failed to fetch error message and Firefox prints NetworkError when attempting to fetch resource.: