i was trying NETFLIX clone by sonny sangha video 2 timing: 1:45:00 there i was supposed to get the background image automatically by the tmdb site itself , i don't know whether my code had some problem but i followed along the video and got this as the console result

Store does not have a valid reducer. Make sure the argument passed to combineReducers is an object whose values are reducers. redux.js:426 Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at
https://api/themoviedb.org/3/discover/tv?api_key=THE_KEY&with_networks=213.
(Reason: CORS request did not succeed). Status code: (null). 2 Uncaught (in promise) Object { message: "Network Error", name: "AxiosError", code: "ERR_NETWORK", config: {…}, request: XMLHttpRequest, response: XMLHttpRequest, stack: "" } Banner.js:18 Uncaught (in promise) Object { message: "Network Error", name: "AxiosError", code: "ERR_NETWORK", config: {…}, request: XMLHttpRequest, response: XMLHttpRequest, stack: "" } Banner.js:18 Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at
https://api/themoviedb.org/3/discover/tv?api_key=THE_KEY&with_networks=213.
(Reason: CORS request did not succeed). Status code: (null).

Uncaught (in promise) Object { message: "Network Error", name: "AxiosError", code: "ERR_NETWORK", config: {…}, request: XMLHttpRequest, response: XMLHttpRequest, stack: "" } ​ code: "ERR_NETWORK" ​ config: Object { timeout: 0, xsrfCookieName: "XSRF-TOKEN", xsrfHeaderName: "X-XSRF-TOKEN", … } ​ message: "Network Error" ​ name: "AxiosError" ​ request: XMLHttpRequest { readyState: 4, timeout: 0, withCredentials: false, … } ​ response: XMLHttpRequest { readyState: 4, timeout: 0, withCredentials: false, … } ​ stack: "" ​ : Object { constructor: AxiosError(message, code, config, request, response), toJSON: toJSON() , stack: "", … } ​​ constructor: function AxiosError(message, code, config, request, response) ​​ isAxiosError: true ​​ stack: "" ​​ toJSON: function toJSON()​​ : Error.prototype { stack: "", … }