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<tr><td colspan="2" class="diff-lineno" id="L1" ><!--LINE 1--></td>
<td colspan="2" class="diff-lineno"><!--LINE 1--></td></tr>
<tr><td class='diff-marker'>−</td><td class='diff-deletedline'><div><del class="diffchange diffchange-inline">== What is the optimal tax system ? ==</del></div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class="diffchange diffchange-inline">&lt;h1&gt;[http://www.iscaffold.com.cn scaffolding]&lt;/h1&gt;</ins></div></td></tr>
<tr><td class='diff-marker'>&#160;</td><td class='diff-context'></td><td class='diff-marker'>&#160;</td><td class='diff-context'></td></tr>
<tr><td class='diff-marker'>−</td><td class='diff-deletedline'><div><del class="diffchange diffchange-inline">We not</del>-<del class="diffchange diffchange-inline">so-recently discussed this on ##economics.</del></div></td><td class='diff-marker'>+</td><td class='diff-addedline'><div><ins class="diffchange diffchange-inline">High</ins>-<ins class="diffchange diffchange-inline">level scaffolding safety requirements </ins></div></td></tr>
<tr><td class='diff-marker'>&#160;</td><td class='diff-context'></td><td class='diff-marker'>&#160;</td><td class='diff-context'></td></tr>

Fatal error: Uncaught TypeError: MWExceptionHandler::handleException(): Argument #1 ($e) must be of type Exception, Error given in /customers/7/c/4/teralaser.net/httpd.www/economics/w/includes/exception/MWExceptionHandler.php:153
Stack trace:
#0 [internal function]: MWExceptionHandler::handleException(Object(Error))
#1 {main}
  thrown in /customers/7/c/4/teralaser.net/httpd.www/economics/w/includes/exception/MWExceptionHandler.php on line 153