title: 'family' argument is not a valid family object for poisson regression with offset?
body: <p>This is my line of code:</p>
  
  <blockquote>
    <p>driver&lt;-glm(ncrash~offset(log(expos))+adol+DE,family = poisson,data=drive)</p>
  </blockquote>
  
  <p>and this is the error:</p>
  
  <p>Error: 'family' argument seems not to be a valid family object</p>
  
  <p>I'm really not sure what this error means. Any ideas would be appreciated!</p>