Object DOMDocument should be created.

[CallumPixelPin]

I recently converted a magento 1.9 module to be compatible with magento 2. all was going well until i got this error:

Object DOMDocument should be created

I'm not experienced enough in Magento and php to figure out how to fix this so i linked the converted module below.

Magento 1.9 module in question

I put the converted module here on github