xthreads conflict plugin last posts 1.1

[mister_don]

MyBB Internal Error

MyBB has experienced an internal error and cannot continue.

Error Type:
    Catchable Fatal Error (4096)
Error Message:
    Object of class MyLanguage could not be converted to string
Location:
    File: inc/plugins/repost.php(310) : eval()'d code
    Line: 12
Backtrace:
    File Line Function
    /inc/class_error.php 206 errorHandler->output_error
    /inc/plugins/repost.php(310) : eval()'d code 12 errorHandler->error
    /inc/plugins/repost.php 310 eval
    /inc/class_plugins.php 101 repostend
    /global.php 718 pluginSystem->run_hooks
    /index.php 18 require_once

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you could see on the home, I just tried to edit the template, and this is the result