Nop 4.3 - HTTP Error 500.35

"HTTP Error 500.35 - ANCM Multiple In-Process Applications in same Process "
NopCommerce 4.3, I received this error message with the second installation on an IIS web server. What does it mean ?

Are both installations using the same Application Pool ?
Searching Google
https://www.google.com/search?q=HTTP+Error+500.35+-+ANCM+Multiple+In-Process+Applications+in+same+Process

thank you :D

Ok, from Nop 4.3, I give each app its own pool of apps. Thank you.