Try the below as it worked for me.
Click on fix for the error. It will ask you to fill out business address. Fill out your address and then click continue.
After that go to income on the left side of the menu> Go to self employment> Select the top most option, "Professional, Commissions Etc" and click continue> You will see, "T2125 Business Summary" > click delete and then confirm and then continue. After that go back to self employment summary on the left and unclick the "Professional, Commissions Etc" and click continue.
Go to review and warning to see if it got cleared.
