Using vuepress1.9.10 in an existing project in vue2.6.6, the console reports an error: Cannot create property 'top' on boolean 'true'

[geniyangge]

• I confirm that this is an issue rather than a question.

Bug report

Using vuepress1.9.10 in an existing project in vue2.6.6, the console reports an error: Cannot create property 'top' on boolean 'true'.
And vue2.6.6 does not work with any version of vuepress ,unless you change the vue version.

Steps to reproduce

"dependencies": {
"vue": "2.6.6"
},
"devDependencies": {
"vue-server-renderer": "2.6.6",
"vue-template-compiler": "2.6.6",
"vuepress": "1.9.10"
}

What is expected?

What is actually happening?

Other relevant information

• Output of npx vuepress info in my VuePress project: