wekan/server/00checkStartup.js

const fs = require('fs');
const os = require('os');

let errors = [];
if (!process.env.WRITABLE_PATH) {
  errors.push("WRITABLE_PATH environment variable missing and/or unset, please configure !");
} else {
  try {
    fs.accessSync(process.env.WRITABLE_PATH, fs.constants.W_OK);
  } catch (err) {
    const userInfo = os.userInfo();
    errors.push("can't write to " + process.env.WRITABLE_PATH, err);
    errors.push("the path of WRITABLE_PATH (" + process.env.WRITABLE_PATH + ") must be writable !!!");
    errors.push("username: " + userInfo["username"] + " - uid: " + userInfo["uid"] + " - gid: " + userInfo["gid"]);
  }
}

if (errors.length > 0) {
  console.error("\n\n");
  console.error(errors.join("\n"));
  console.error("\n");
  console.error("Stopping Wekan");
  console.error("Wekan isn't runnable. Please resolve the error's above and restart Wekan !");
  console.error("\n\n");
  process.exit(1);
}