When the fifth season of HBO's Silicon Valley premieres tomorrow, viewers will notice Erlich Bachman is no longer part of the Pied Piper gang, and reports about why that is the case have come to light.

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T.J. Miller, who played Bachman, left the show after Season 4 wrapped up last year. Initially, no reasons were given for Miller's departure, though HBO said that the split was mutual.Mike Judge, the creator and executive producer of the hit series, has since provided some context for Miller's departure. "[It's] not fun to work with someone who doesn't want to be there, [especially when] they're one of the main people and you've got however many crewmembers and extras and people who are [not paid as well] and they're all showing up before 7 a.m., and then are just like, 'Oh, OK, we're not shooting today,'" Judge told The Hollywood Reporter THR also reports that Miller would show up late to table reads without having read the script. In the end, working with Miller "just wasn't working," according to Judge.In response, Miller said, "What was occurring was I was out doing stand-up all the time, even if it meant I only got three hours of sleep. So, the thing I have a problem with? It's pushing myself to do too much."The actor was reportedly offered the opportunity to return for three episodes of Season 5 to give his character a sendoff, but he declined. Miller can next be seen in Ready Player One ( read IGN's review ) and Deadpool 2.Silicon Valley returns to HBO tomorrow, March 25.

Michael Domanico is a freelance writer. Follow him on Twitter