Image forming apparatus

An image forming apparatus comprising:

• a fixing device including
• a rotatable endless fixing member,
• a nip forming member arranged inside the fixing member,
• a pressing member in contact with the nip forming member via the fixing member, and
• a heating source configured to heat the fixing member;
• a sensor to detect an abnormality;
• and
• a controller to stop an operation of the image forming apparatus,
• wherein, when the sensor detects that the abnormality occurs in at least one of the fixing device and other devices included in the image forming apparatus, the controller stops an executing operation of the image forming apparatus and, after stopping, the controller controls the fixing member to rotate.