eXpress severe error; unable to know which gene it is

Question

[brandon123kee]

Hi, there were some post previously about severe error when using eXpress eXpress error gene length different.

I faced a similar problem except my error is as such: SEVERE: Target 'chrM' differs in length between MultiFASTA and alignment (SAM/BAM) files (16569 vs. 16571). As it involves an entire chromosome, I am unable to identify which part is erroneous, and therefore unable to change it. Can anyone help? Thanks in advance!