Why R calculations are inconsistent in my virtual machine?

Question

I\'m trying to build a new virtual machine with R and the follow packages below running as a R server to my calculations.

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Answer 1

Just to let you know what happened with my issue. The problem was the TIMEZONE. I don't know exactly why, but R or some of the packages that we use for our calculations requires the timezone to be the same.

I'm located in Germany (timezone CET which is +1 UTC) and I was setting my virtual machine to use UTC and thus the problem. Oh man, I'm really glad to solve this issue (3 days straight working on this!) but now everything is fine! A huge thank you to my colleague @Ralf for the tip!

Other issue related:1, 2, 3. I hope this helps someone! :)