Error: Command failed: git push --force heroku `git subtree split --prefix=frontend HEAD`:refs/heads/main 1/31 (0) [0] 2/31 (1) [0] 3/31 (2) [0] 4/31 (3) [0] 5/31 (4) [0] 6/31 (5) [0] 7/31 (6) [0] 8/31 (7) [0] 9/31 (8) [0] 10/31 (9) [0] 11/31 (10) [0] 12/31 (11) [0] 13/31 (12) [0] 14/31 (13) [0] 15/31 (14) [0] 16/31 (15) [0] 17/31 (16) [0] 18/31 (17) [0] 19/31 (18) [0] 20/31 (19) [0] 21/31 (20) [0] 22/31 (21) [0] 23/31 (22) [0] 24/31 (23) [0] 25/31 (24) [0] 26/31 (25) [0] 27/31 (26) [0] 28/31 (27) [0] 29/31 (28) [0] 30/31 (29) [0] 31/31 (30) [0] remote: Updated 43 paths from a7d2b0b remote: Compressing source files... done. remote: Building source: remote: remote: -----> Building on the Heroku-24 stack remote: -----> Using buildpack: heroku/nodejs remote: -----> Node.js app detected remote: remote: -----> Creating runtime environment remote: remote: NPM_CONFIG_LOGLEVEL=error remote: NODE_VERBOSE=false remote: NODE_ENV=production remote: NODE_MODULES_CACHE=true remote: remote: -----> Installing binaries remote: engines.node (package.json): unspecified remote: engines.npm (package.json): unspecified (use default) remote: remote: Resolving node version 20.x... remote: Downloading and installing node 20.17.0... remote: Using default npm version: 10.8.2 remote: remote: -----> Restoring cache remote: - npm cache remote: remote: -----> Installing dependencies remote: Installing node modules remote: remote: added 260 packages, and audited 261 packages in 5s remote: remote: 56 packages are looking for funding remote: run `npm fund` for details remote: remote: 2 vulnerabilities (1 moderate, 1 high) remote: remote: To address all issues, run: remote: npm audit fix remote: remote: Run `npm audit` for details. remote: remote: -----> Build remote: Running build remote: remote: > [email protected] build remote: > tsc -b && vite build remote: remote: src/components/Spreadsheet.tsx(2,86): error TS6133: 'JSpreadsheetOptions' is declared but its value is never read. remote: src/components/UploadButton.tsx(35,9): error TS6133: 'handleUpload' is declared but its value is never read. remote: remote: -----> Build failed remote: remote: We're sorry this build is failing! You can troubleshoot common issues here: remote: https://devcenter.heroku.com/articles/troubleshooting-node-deploys remote: remote: Some possible problems: remote: remote: - Node version not specified in package.json remote: https://devcenter.heroku.com/articles/nodejs-support#specifying-a-node-js-version remote: remote: Love, remote: Heroku remote: remote: ! Push rejected, failed to compile Node.js app. remote: remote: ! Push failed remote: Verifying deploy... remote: remote: ! Push rejected to ***. remote: To https://git.heroku.com/***.git ! [remote rejected] 4d4c9c7524415bd830b4b0a738bb980eab565219 -> main (pre-receive hook declined) error: failed to push some refs to 'https://git.heroku.com/***.git'

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/