Fedora error on update

This is the error message from terminal on Fedora. The app was installed and run through terminal:

Install: isSilent: true, isForceRunAfter: true
Executing: which gksudo || which kdesudo || which pkexec || which beesu with args: 
Executing: which zypper with args: 
which: no zypper in (/home/vereign/.local/bin:/home/vereign/bin:/usr/local/bin:/usr/bin)

Error: Error: Command which zypper exited with code 1
    at RpmUpdater.spawnSyncLog (/opt/erx/resources/app.asar/node_modules/electron-updater/out/BaseUpdater.js:121:19)
    at RpmUpdater.doInstall (/opt/erx/resources/app.asar/node_modules/electron-updater/out/RpmUpdater.js:35:37)
    at RpmUpdater.install (/opt/erx/resources/app.asar/node_modules/electron-updater/out/BaseUpdater.js:57:25)
    at RpmUpdater.quitAndInstall (/opt/erx/resources/app.asar/node_modules/electron-updater/out/BaseUpdater.js:15:34)
    at RpmUpdater.<anonymous> (/opt/erx/resources/app.asar/out/main/index.js:52:31)
    at RpmUpdater.emit (node:events:518:28)
    at RpmUpdater.dispatchUpdateDownloaded (/opt/erx/resources/app.asar/node_modules/electron-updater/out/AppUpdater.js:456:14)
    at Object.done (/opt/erx/resources/app.asar/node_modules/electron-updater/out/BaseUpdater.js:31:22)
    at done (/opt/erx/resources/app.asar/node_modules/electron-updater/out/AppUpdater.js:568:31)
    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
2025-08-13 15:56:51 [INFO] Error in auto-updater: {}