Required metadata values are missing


I have been developing a tool on a local installation of Galaxy which keeps finishing and all 8 outputs turn red due to an error, however no error is stated.

When I click ‘Edit attributes’ there is an orange banner stating;

‘Required metadata values are missing. Some of these values may not be editable by the user. Selecting “Auto-detect” will attempt to fix these values.’

The tool xml file has the following ‘output’ section which contains all the metadata I thought was needed;

Am I missing something really basic in the output section which means all the output is lacking certain metadata, causing the issue?

Additionally to this, one of the outputs is a simple text file, but I cant find a dataset type for text files which arnt delineated, am I missing something simple here as well?

Thanks for any help you can provide,