Test Case Issue

[Aadriya]

"before each" hook for "has the correct class": TypeError: Cannot convert undefined or null to object at Function.from (native) at _toConsumableArray (src/reducers/country_reducer.js:22:182) at exports.default (src/reducers/country_reducer.js:8:7) at combination (node_modules/redux/lib/combineReducers.js:132:29) at dispatch ---------------------------etc

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Error Shows When Run Test cases of sign up page (npm run test -- --watch
)