BibLaTex Problem

Have you had this error?

$ biber main.aux
INFO - This is Biber 2.1
INFO - Logfile is 'main.aux.blg'
ERROR - Cannot find control file 'main.aux.bcf'! - did you pass the "backend=biber" option to BibLaTeX?
INFO - ERRORS: 1
Nugrohos-MacBook-Air:tesBibTex nugroho$ 

Me too.

The solution is simple, make sure the command is

$biber main

and not

$biber main.aux

And we'll have

$ biber main.aux
INFO - This is Biber 2.1
INFO - Logfile is 'main.aux.blg'
ERROR - Cannot find control file 'main.aux.bcf'! - did you pass the "backend=biber" option to BibLaTeX?
INFO - ERRORS: 1
Nugrohos-MacBook-Air:tesBibTex nugroho$ biber main    
INFO - This is Biber 2.1
INFO - Logfile is 'main.blg'
INFO - Reading 'main.bcf'
INFO - Found 1 citekeys in bib section 0
INFO - Processing section 0
INFO - Looking for bibtex format file 'main.bib' for section 0
INFO - Decoding LaTeX character macros into UTF-8
INFO - Found BibTeX data source 'main.bib'
INFO - Overriding locale 'en-US' defaults 'variable = shifted' with 'variable = non-ignorable'
INFO - Overriding locale 'en-US' defaults 'normalization = NFD' with 'normalization = prenormalized'
INFO - Sorting list 'nty' of type 'entry' with scheme 'nty' and locale 'en-US'
INFO - No sort tailoring available for locale 'en-US'
INFO - Writing 'main.bbl' with encoding 'ascii'
INFO - Output to main.bbl
Nugrohos-MacBook-Air:tesBibTex nugroho$ 

Run pdflatex twice and we're good to go, :)

Good luck.