[0] Config.pm:304> INFO - This is Biber 2.14 (beta)
[0] Config.pm:307> INFO - Logfile is 'main.blg'
[116] biber:322> INFO - === Sa Jul 31, 2021, 11:14:07
[135] Biber.pm:415> INFO - Reading 'main.bcf'
[254] Biber.pm:943> INFO - Found 0 citekeys in bib section 0
[267] Utils.pm:293> WARN - The file 'main.bcf' does not contain any citations!
[286] bbl.pm:652> INFO - Writing 'main.bbl' with encoding 'UTF-8'
[286] bbl.pm:755> INFO - Output to main.bbl
[286] Biber.pm:128> INFO - WARNINGS: 1