title: No Json serializer found for type Seq[(String, String)]. Try to implement an implicit Writes or Format for this type
body: <p>I want to convert a <code>Seq[(String, String)]</code> into  JSON with Scala play, but I face this error:</p>
  
  <blockquote>
    <p>No Json serializer found for type Seq[(String, String)]. Try to implement an implicit Writes or Format for this type.</p>
  </blockquote>
  
  <p>How can I fix this?</p>