What type of hardware are you using: Old laptop or computer
What YunoHost version are you running: 12.0.17
What app is this about: Grist
Describe your issue
Just tried to upgrade Grist from 1.6.1~ynh1 to 1.7.1~ynh1, and it failed 
As far as i understand, the error seems to be stated in this log line :
DEBUG - Usage Error: The nearest package directory (/var/www/grist/sandbox/pyodide/_build/worker) doesn't seem to be part of the project declared in /var/www/grist.