Can't include references with biblatex

I have no idea what’s going on. I’m trying to write my assignment in Latex but the references are not showing up. I put this on the preamble:

usepackage{biblatex}
addbibresource{ref.bib}

My folder is split into different files, so I have this on the main file:

import{sections/}{Referencias}

And in the file Referencias.tex I have this:

section*{centering REFERÊNCIAS}
printbibliography

My file ref.bib has the Biblatex reference like so:

@book{NISE:2013,
  author    = {Norman S. Nise}, 
  title     = {Engenharia de sistemas de controle},
  publisher = {LTC},
  year      = {2013},
  address   = {Rio de Janeiro},
  edition   = {6},
}

@book{OGATA:2010,
  author    = {Katsuhiko Ogata}, 
  title     = {Engenharia de controle moderno},
  publisher = {Pearson Prentice Hall},
  year      = {2010},
  address   = {São Paulo},
  edition   = {5},
}

@misc{Deepanshu:2016,
  author = {Deepanshu Singh, Himanshu Jain }
  title = {Reinforcement Learning},
  howpublished = {url{http://courseprojects.souravsengupta.com/cds2016/reinforcement-learning/}},
  note = {Accessed: 2019-04-14}
}

and I cite it like this:

cite{Deepanshu:2016}

But the references won’t show up. If anyone could give me a hand or point me in the right direction it would be greatly appreciated, because honestly, I don’t even know what to Google to solve this.

EDIT

So, this is the output of my .blg file:

[0] Config.pm:302> INFO - This is Biber 2.9
[0] Config.pm:305> INFO - Logfile is '0_0_Arquivo_Principal.blg'
[23] biber:313> INFO - === Sat Apr 20, 2019, 18:31:16
[43] Biber.pm:371> INFO - Reading '0_0_Arquivo_Principal.bcf'
[103] Biber.pm:857> INFO - Found 5 citekeys in bib section 0
[113] Biber.pm:3981> INFO - Processing section 0
[123] Biber.pm:4154> INFO - Looking for bibtex format file 'ref.bib' for section 0
[123] bibtex.pm:1468> INFO - LaTeX decoding ...
[131] bibtex.pm:1294> INFO - Found BibTeX data source 'ref.bib'
[164] Utils.pm:169> WARN - ISBN '1886529302, 9781886529304' in entry 'Bertsekas:2007:DPO:1396348' is invalid - run biber with '--validate_datamodel' for details.
[169] Utils.pm:185> ERROR - BibTeX subsystem: /tmp/6CNc3TdK7G/ref.bib_9127.utf8, line 21, syntax error: found "title", expected end of entry ("}" or ")") (skipping to next "@")
[169] Biber.pm:110> INFO - WARNINGS: 1
[169] Biber.pm:114> INFO - ERRORS: 1

And here are the parts from the log file

Package biblatex Warning: Conflicting options.
(biblatex)                '<namepart>inits' conflicts with 'uniquename=full'.
(biblatex)                Setting 'uniquename=init' on input line 112.

Package amsmath Warning: Foreign command over;
(amsmath)                frac or genfrac should be used instead
(amsmath)                 on input line 39.

LaTeX Warning: Citation 'DBLP:journals/corr/abs-1806-07366' on page 3 undefined
 on input line 62.

LaTeX Warning: Citation 'wiki:File:Lorenz_attractor_yb.svg' on page 5 undefined
 on input line 119.

LaTeX Font Info:    Font shape `T1/ptm/bx/n' in size <10.95> not available
(Font)              Font shape `T1/ptm/b/n' tried instead on input line 119.

LaTeX Warning: Citation 'wiki:File:Lorenz_attractor_yb.svg' on page 5 undefined
 on input line 119.

LaTeX Warning: Citation 'Deepanshu:2016' on page 6 undefined on input line 145.

LaTeX Warning: Citation 'Deepanshu:2016' on page 6 undefined on input line 145.


LaTeX Warning: Citation 'Bertsekas:2007:DPO:1396348' on page 6 undefined on inp
ut line 149.

LaTeX Warning: Citation 'Wolfram2002' on page 6 undefined on input line 155.

LaTeX Warning: Empty bibliography on input line 7.

LaTeX Warning: There were undefined references.


Package biblatex Warning: Please (re)run Biber on the file:
(biblatex)                0_0_Arquivo_Principal
(biblatex)                and rerun LaTeX afterwards.