i found some error when i need edit or delete the invoice

when i need delete the invoice come out 419 unknow status

419 Unknown Status The page token has been expired! please click OK to refresh then try again.

this i found at F12

TypeError: Cannot read property ‘status’ of null at Mn. (app.js?id=a2c86405dcf4d4f19f65:2) at Wt (app.js?id=a2c86405dcf4d4f19f65:2) at Mn.INkZ.t.$emit (app.js?id=a2c86405dcf4d4f19f65:2) at t.value (app.js?id=a2c86405dcf4d4f19f65:2) at components.a46bdd7d9eaef7df672b.js?_sw-precache=39439ab06b7a5b62c47a44e25ee506f4:1

Failed to load resource: the server responded with a status of 419 (unknown status)

Thanks for help *xampp