Show last n lines of log throws HTTP Status 500 – Internal Server Error

[snazare]

Describe the bug
Functionality show last n lines of log opens a new tab with an error HTTP Status 500 – Internal Server Error.

Steps to reproduce

1. Go to Admin Tools homepage within your XWiki instance
2. Click on "Show last n lines of log" within the "Backend" section
3. Write the number of lines in the modal
4. Click on "View"

Expected result
A new tab opens with the requested logs

Actual result
A new tab opens with error HTTP Status 500 – Internal Server Error.

Screenshots

Environment:

• XWiki Cloud 16.10.8
• Browser Chrome 134.0.6998.45
• Admin Tools (Pro) 1.2-rc-1