Undefined variable $file ee/legacy/libraries/Cp.php, line 753 when using Bloqs add-on

[bryanmccall]

I’m getting this warning when viewing/editing individual bloqs in the control panel. (Add-Ons > Bloqs > click on individual bloq.)

Warning
Undefined variable $file
ee/legacy/libraries/Cp.php, line 753
Severity: E_WARNING
Deprecated
file_exists(): Passing null to parameter #1 ($filename) of type string is deprecated
ee/legacy/libraries/Cp.php, line 753
Severity: E_DEPRECATED

EE verson 7.5.11 and Bloqs version 5.1.2. PHP is version 8.3 (or 8.2).