data import - std::exception

[konradmayer]

I tried to import data to vespucci, but only got the following exception thrown:
The following exception was thrown: std::exception

So I looked for example datasets to see if the files to be imported were not in the correct format or whether a problem with the program exists and tried all of the test datasets I could find on the GitHub repo:
https://github.com/VespucciProject/Vespucci/tree/c8d258eff039cca3857882e6e29554468832264b/Test/datasets

Of these, only wide_text.txt loads correctly, same error message as above for the other files.

I'm running Vespucci 1.0.0 (beta) on Ubuntu 18.04.3 LTS (Bionic Beaver) 64-bit with Mate desktop.