Log path configured and logback. XML is consistent, UI interface is alternate error
1, failed to get the log file,
The Request failed with the status code of 416
2, failed to get the log file,
Always read the property 'split of undefined
Page to locate the line
Else if (the response. The status===206) {
Size=parseInt (the response headers [' content - range]. The split ('/') [1]).

To solve, thank you