uploaded files do not display in pages in wikijs

Describe the bug
Can't access to uploaded files: path must be absolute or specify root to res.sendFile

0|server | 2021-02-06T12:50:35.499Z [MASTER] error: path must be absolute or specify root to res.sendFile

Equals to this problem: #2463 and #2930

To Reproduce
Steps to reproduce the behavior:
Administration -> Utilities -> Flush Pages and Assets Cache

Expected behavior
These videos and pictures do not display

Screenshots

Host Info (please complete the following information):
OS: Linux - Debian (buster) 10 x64
Wiki.js version: 2.5.159
Database engine: PostgreSQL 11.4

Suggested solution:

this line:

await sendFile(cachePath, { dotfiles: 'deny', root: "/opt/wiki/" })

replace with this line:

try {
await sendFile(cachePath, { dotfiles: 'deny' })
}catch (error) {
await sendFile(cachePath, { dotfiles: 'deny', root: '/opt/wiki/' })
}