title: My docker-compose up is no longer working and cannot start mariadb
body: <p>I started using a mac and use docker to develop my sites. Until 12 ago my projects were running properly.</p>
  
  <p>The last activity I tried to on the machine was to install brew mysql, which I already removed. After I restarted my machine, I noticed that I can no longer start any docker container and view a project.</p>
  
  <p>I cd into my project folder and run</p>
  
  <pre><code>docker-compose up
  </code></pre>
  
  <p>The following error shows up:</p>
  
  <pre><code>Sydney-de-Sousas-Mac:scottishleader.co.za sidney$ docker-compose up
  Starting scottishleader_mariadb ... error
  
  ERROR: for scottishleader_mariadb  Cannot start service mariadb: driver failed programming external connectivity on endpoint scottishleader_mariadb (30a2e258468e8840ca5e67a535835603770afadab58b3e460e624ae3ba587293): Error starting userland proxy: /forwards/expose/port returned unexpected status: 500
  
  ERROR: for mariadb  Cannot start service mariadb: driver failed programming external connectivity on endpoint scottishleader_mariadb (30a2e258468e8840ca5e67a535835603770afadab58b3e460e624ae3ba587293): Error starting userland proxy: /forwards/expose/port returned unexpected status: 500
  ERROR: Encountered errors while bringing up the project.
  Sydney-de-Sousas-Mac:scottishleader.co.za sidney$
  </code></pre>
  
  <p>I run docker ps and no container is listed</p>
  
  <pre><code>Sydney-de-Sousas-Mac:scottishleader.co.za sidney$ docker ps
  CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
  </code></pre>
  
  <p>Why can I suddenly not start the container?</p>