The Federal Drug Administration (FDA) compiles complaints about medications in the FDA Adverse Event Reporting System (FAERS). I obtained the complaints filed about Mylan's EpiPen and EpiPen Jr. products from January 1, 2012 to May 15, 2018. A total of 533 pages were released to me under the Freedom of Information Act (FOIA).
The document contains hundreds of reports of EpiPen failures over the years, including failures of the product that resulted in death. However, the Mylan pharmaceutical company denies that there is a causal relationship between the failures of their product and the deaths.
You can see all 533 pages of the report at the Internet Archive.