I am running VuFind off an ubuntu server from the ubuntu package found on the vufind website. Once setup, I get this error. I have tried several things already to try to and sort it out, but could use a little help in determining what is wrong. For example, I had read another thread where someone with the same error (but perhaps not the same problem) had tried to resolve it by setting the environment variables. I did that and tested them with the echo command to make sure they were working, so it clearly wasn't the problem.
Basically, where I am falling short is in figuring out what the problem is. What steps should I take to diagnose my problem? Where should I look for the errors?