I am using the LEfSe tool on galaxy (http://huttenhower.sph.harvard.edu/galaxy/root).

The upload data step is fine, the next step is format data for LEfSe. When am attempting to carry out this step I am getting the below mentioned error message.

Server Error

An error occurred. See the error logs for more information. (Turn debug on to display exception reports here)

I was wondering if I can get some help regarding how to fix this issue.

Thanks,

Shreya