Cannot invalidate the cache (Ignored because method (post) is not in cache.methods (get,head))

[loingtan]

this is my get function, i assign it with id 'list-student',

 async fetchStudents(queryString: string, isSeach = false) {
      const query = `?${this.search.typeQuery}=${queryString}`;
      if (isSeach) {
        console.log('search');
        this.page = 1;
        this.students = [];
      }
      const response = await axiosClient.get(
        `/student${query}&page=${this.page}`,
        {
          id: 'list-student',
          cache: {
            ttl: 1000 * 60 * 2, // 2 minutes,
          },
        }
      );
      this.students.push(...response.data);
    },

then here my post function

 async addStudent(student: { [p: string]: File | string }) {
      try {
        await axiosClient.post('/student', student, {
          cache: {
            update: {
              'list-student': (listCache, createPost) => {
                console.log(listCache.state);
                if (listCache.state !== 'cached') {
                  return 'ignore';
                }
                if (Array.isArray(listCache.data.data)) {
                  listCache.data.data.push(createPost.data);
                }
                return listCache;
              },
            },
          },
        });
      } catch (error) {
        this.errorMessages = arrayToObject(error.response.data.message) || {};
      }
    },

and got this message:

[loingtan]

I fixed this error by adding method post in cache config, how i'm facing another issue that, the cache won't update by the psot function it stays them same before mutation