Vue Axios function including an async function result - asynchronous

Question

This is my vue.js function, it calls a python API . THe problem is around AWAIT
async getLinearSolver() {
const path = '/api/nutritional_constraints_1';
var vm = this
var json = await this.formatDataForPulp()
axios.post(path,json )
.then((res) => {
console.log(res)
vm.linear_result = "Write my res data "
})
.catch((error) => {
console.error(error);
});
}
console.log(res) is ok :
Object { data: {…}, status: 200, statusText: "OK", headers: {…}, config: {…}, request: XMLHttpRequest }
but no template modification is possible, can't assign any variable to vm.linear_result
vm.linear_result = "Write my res data " is not working
:
[Vue warn]: Error in render: "Error: Cannot find module './undefined'"
found in
---> <NutritionalConstraints> at src/components/NutritionalConstraints.vue
<App> at src/App.vue
<Root> vue.runtime.esm.js:619
Error: Cannot find module './undefined'
webpackContextResolve .*$:51
webpackContext .*$:45
render NutritionalConstraints.vue:216
renderList VueJS
render NutritionalConstraints.vue:165
VueJS 14
_callee$/< NutritionalConstraints.vue:235
promise callback*_callee$ NutritionalConstraints.vue:220
Babel 11
onSubmit NutritionalConstraints.vue:290
VueJS 21
vue.runtime.esm.js:1888
Please help me, I really don't know what to do .
I have a similar query with no external AWAIT function, it works perfectly .
THis is a simplier example that leads to the same problem:
async getLinearSolver() {
const path = '/api/nutritional_constraints_1';
var vm = this
this.formatDataForPulp().then((res) => {
console.log(res) // Working
vm.a_template_variable ="Write my res data "// Not working !
})
}

Answer 1

Finally found out the problem .
I needed to deep clone some json array inside of my formatDataForPulp() function .
Like this :
var data = {
"items": JSON.parse(JSON.stringify(this.items)), // WE need to do a deep clone otherwize it crashes vue.js
"constraints": JSON.parse(JSON.stringify(this.constraints)) // WE need to do a deep clone otherwize it crashes vue.js
}
I was not doing it before, so vue.js was modifying my 2 way binding data during my formatDataForPulp() function, and then, vue.js was crashing !! THe problem was not coming from the ASYNC system.