Prestashop 1.7.8.1 metrics Uncaught Error: Malformed UTF-8 data

[branel]

Hi! I am new prestashop user and have just setup my store. I have problem with prestashop metrics. It was working from beggining but from yesterday it stopped working. I am running prestashop 1.7.8.1 and "Dashboard" page is completly empty. When I inspect i get error: 
 

Uncaught Error: Malformed UTF-8 data
    at Object.stringify (chunk-vendor-metrics.2.4.1.js:82)
    at init.toString (chunk-vendor-metrics.2.4.1.js:82)
    at me.value (chunk-vendor-metrics.2.4.1.js:81)
    at Object.getItem (app-metrics.2.4.1.js:35)
    at r (chunk-vendor-metrics.2.4.1.js:87)
    at p (chunk-vendor-metrics.2.4.1.js:87)
    at chunk-vendor-metrics.2.4.1.js:87
    at chunk-vendor-metrics.2.4.1.js:87
    at Array.forEach (<anonymous>)
    at new Wr (chunk-vendor-metrics.2.4.1.js:87)

 

It was same on version 1.7.8.0. I tried to delete prestashop metric module and install it again, cleared cache and nothing helps. Does anyone have some idea what is the problem?

 

Thanks for helping me!

[w3bsolutions]

Clear your local storage and refresh. If you don't know how, clear all your cache and it should also work. The entry below (example in Safari) is the problematic one: