why did roseanne barr leave the conners

Roseanne Barr left the show "The Conners" because she was fired from the original series "Roseanne" after posting a series of racist tweets about Valerie Jarrett, a former advisor to Barack Obama. This led ABC to cancel "Roseanne" and create the spinoff "The Conners" without her. The character Roseanne Conner was killed off in the spinoff as having died from an opioid overdose, reflecting a storyline that was introduced in the original revival. Barr's firing and the character's death were intended to sever ties completely and allow the spinoff to continue without her. Barr publicly expressed her displeasure with how the character was written out, but the network opted for a permanent exit due to the offensive nature of her tweets and the controversy they caused.