App does not open when launching from desktop

Caprine 2.56.1 snap
Ubuntu 20.04 LTS X.Org

Running caprine from command line results in:

A JavaScript error occurred in the main process
Uncaught Exception:
SyntaxError: Unexpected end of JSON input
    at JSON.parse (<anonymous>)
    at Conf._deserialize (/snap/caprine/52/resources/app.asar/node_modules/conf/dist/source/index.js:67:43)
    at get store [as store] (/snap/caprine/52/resources/app.asar/node_modules/conf/dist/source/index.js:278:43)
    at new Conf (/snap/caprine/52/resources/app.asar/node_modules/conf/dist/source/index.js:131:32)
    at new ElectronStore (/snap/caprine/52/resources/app.asar/node_modules/electron-store/index.js:69:3)
    at Object.<anonymous> (/snap/caprine/52/resources/app.asar/dist-js/config.js:228:15)
    at Module._compile (node:internal/modules/cjs/loader:1120:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1175:10)
    at Module.load (node:internal/modules/cjs/loader:988:32)
    at Module._load (node:internal/modules/cjs/loader:829:12)

(caprine:5825): Gtk-WARNING **: 20:46:42.831: Theme parsing error: gtk.css:1413:23: 'font-feature-settings' is not a valid property name

(caprine:5825): Gtk-WARNING **: 20:46:42.834: Theme parsing error: gtk.css:3286:25: 'font-feature-settings' is not a valid property name

(caprine:5825): Gtk-WARNING **: 20:46:42.835: Theme parsing error: gtk.css:3748:23: 'font-feature-settings' is not a valid property name
WARNING: Kernel has no file descriptor comparison support: Operation not permitted