Matcher functions should return an object in the following format when using jest assertion

im getting the error below when im running test against multiple browser using wdio and mocha as testing framework, same assertion is working fine if its running against only one browser

describe ('Landing Page test suite',()=> {
    before(()=>{
        browser.url('/')
    })

    it ('1. Page should be loaded proeprly',()=>{
        p.header.waitForDisplayed()
            expect(p.header).toBeVisible()
    })
})



Unexpected return from a matcher function.
Matcher functions should return an object in the following format:
  {message?: string | function, pass: boolean}
'[{"message": [Function message], "pass": false}, {"message": [Function message], "pass": false}]' was returned

here is code sample https://github.com/Amrkamel1/wdExample.git

run: npm i npm run test