getting error POST http://localhost:5000/users/signup 400 (Bad Request)

I am creating an authentication system with redux but getting POST http://localhost:5000/users/signup 400 (Bad Request) while requesting to backend for login but this link is working to login with help of postman and also getting axios error AxiosError {message: 'Request failed with status code 400', name: 'AxiosError', code: 'ERR_BAD_REQUEST', config: {…}, request: XMLHttpRequest, …}

This is the code of authSlice.js

import * as api from "../api"
export const login=createAsyncThunk("auth/login",async({formValue,navigate,toast})=>{
    try{
        const response=await api.signIn(formValue);
        toast.success("success");
        navigate("/");
        return response.data;
    }catch(err){
        console.log(err)
    }
})

const authSlice=createSlice({
    name:"auth",
    initialState:{
        user:null,
        error:"",
        loading:false,
    },
    reducers:{

    },
    extraReducers:{
        [login.pending]:(state,action)=>{
            state.loading=true;
        },
        [login.fulfilled]:(state,action)=>{
            state.loading=false;
            localStorage.setItem("profile",JSON.stringify(...action.payload));
            state.user=action.payload;
        },
        [login.rejected]:(state,action)=>{
            state.loading=false;
            state.error=action.payload.message;
        },
    }
});
export default authSlice.reducer;

This is the code of api.js

const API =axios.create({baseURL:"http://localhost:5000"});
export const signIn=(formData)=>API.post("/users/signup",formData);

error image