V11 Update error

when i update bench from V10 to V11

i have some custom report when i update merge them using this commands
cd /home/frappe/frappe-bench/apps/erpnext/
git status
git pull
git add --all
git stash

after that update bench

when finish update and open my site i get this error

 Not Found
The resource you are looking for is not available

any help here ??