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--- wiki:deploying_django_website [2021/05/19 14:12] – created antisa
+++ wiki:deploying_django_website [2021/07/16 11:15] (current) – add Troubleshooting antisa
@@ Line 173: / Line 173: @@
   sudo systemctl restart apache2
+====== Troubleshooting ======
+===== RequiredDependencyException: jpeg =====
+Error:
+<code>
+...
+Traceback (most recent call last):
+      File "<string>", line 1, in <module>
+      File "/tmp/pip-install-tbcs638c/pillow_8a743b86be7a43dabab5b1bfbde4a377/setup.py", line 804, in <module>
+        raise RequiredDependencyException(msg)
+    __main__.RequiredDependencyException:
+    The headers or library files could not be found for jpeg,
+    a required dependency when compiling Pillow from source.
+...
+</code>
+Install:
+  apt-get install libjpeg-dev zlib1g-dev
 ====== Tested on ======
   * Ubuntu 18.04
+  * Ubuntu 20.04.02
 ====== See also ======
@@ Line 182: / Line 204: @@
   * [[https://www.youtube.com/watch?v=Sa_kQheCnds|Corey Schafer youtube]]
   * https://stackoverflow.com/questions/47803081/certbot-apache-error-name-duplicates-previous-wsgi-daemon-definition/47803231
+  * https://stackoverflow.com/a/49751641/6881647