This is pdfTeX, Version 3.14159265-2.6-1.40.21 (TeX Live 2020/Debian) (preloaded format=pdflatex 2022.4.27) 27 APR 2022 20:08 entering extended mode restricted \write18 enabled. %&-line parsing enabled. **bibliography.tex ! Emergency stop. <*> bibliography.tex *** (job aborted, file error in nonstop mode) Here is how much of TeX's memory you used: 2 strings out of 481209 102 string characters out of 5914747 266276 words of memory out of 5000000 17052 multiletter control sequences out of 15000+600000 403430 words of font info for 27 fonts, out of 8000000 for 9000 36 hyphenation exceptions out of 8191 0i,0n,0p,1b,6s stack positions out of 5000i,500n,10000p,200000b,80000s ! ==> Fatal error occurred, no output PDF file produced!