"Given address is not a PublicKey nor a string" with react build

[alchemistgo87]

Getting this error while creating a new Program object:

Uncaught Error: Given address is not a PublicKey nor a string.
    at an (common.ts:64)
    at new e (index.ts:253)
    at WorkspaceProvider.jsx:27
    at Object.useMemo (react-dom.production.min.js:172)
    at t.useMemo (react.production.min.js:23)
    at N (WorkspaceProvider.jsx:23)
    at oo (react-dom.production.min.js:157)
    at Zu (react-dom.production.min.js:267)
    at Is (react-dom.production.min.js:250)
    at js (react-dom.production.min.js:250)

I am getting this strange issue only while running the build (with yarn build & serve -s build), though it is working fine locally (with yarn start)

Here is the link to my repo:
https://github.com/alchemistgo87/solana-react-twitter

Here is the specific file in which I am creating the program object:
https://github.com/alchemistgo87/solana-react-twitter/blob/main/app/src/hooks/WorkspaceProvider.jsx

[alchemistgo87]

Found the solution:
There was a bug in anchor version 0.19.0 (Ref - #1138 ) which is now fixed in 0.19.1-beta.1

So, I just needed to upgrade the anchor library version:

yarn upgrade @project-serum/anchor --latest