title: I always received connection reset when trying to execute a test file with TCPDF library. Does this apache error log doing it?
body: <p>Apache Error Log:</p>
  <pre><code>[Fri Dec 17 12:10:17.386441 2021] [mpm_winnt:notice] [pid 12996:tid 612] AH00455: Apache/2.4.51 (Win64) OpenSSL/1.1.1l PHP/8.0.12 configured -- resuming normal operations
  [Fri Dec 17 12:10:17.386441 2021] [mpm_winnt:notice] [pid 12996:tid 612] AH00456: Apache Lounge VS16 Server built: Oct  7 2021 16:27:02
  [Fri Dec 17 12:10:17.386441 2021] [core:notice] [pid 12996:tid 612] AH00094: Command line: 'c:\\xampp\\apache\\bin\\httpd.exe -d C:/xampp/apache'
  [Fri Dec 17 12:10:17.399752 2021] [mpm_winnt:notice] [pid 12996:tid 612] AH00418: Parent: Created child process 18512
  </code></pre>
  <p>I added this:</p>
  <pre><code>#ThreadStackSize
  &lt;IfModule mpm_winnt_module&gt;
     ThreadStackSize 88888888
  &lt;/IfModule&gt;
  </code></pre>
  <p>at the very end of httpd.conf but the error is still the same. Thanks. I've been stuck here for almost 3 days now, the connection reset thing really is stubborn. I tried several resolve but neither of them solved the issue.</p>