Hi,
unfortunately I can't successfully lunch the cloud server. There is my error log
I am using node v14.18.0, npm 7.24.1.

2021-10-03 18:11:23:2323 info: openHAB-cloud: Backend service is starting up...
2021-10-03 18:11:23:2323 info: openHAB-cloud: Backend logging initialized...
2021-10-03 18:11:23:2323 info: openHAB-cloud: Initializing XMPP connection to GCM
2021-10-03 18:11:24:2424 info: openHAB-cloud: Connecting to Redis at 127.0.0.1:6379
2021-10-03 18:11:25:2525 info: openHAB-cloud: Mailer will emulate sending in development environment
2021-10-03 18:11:25:2525 error: uncaughtException: Cannot read property 'prototype' of undefined
TypeError: Cannot read property 'prototype' of undefined
at Object. (/var/www/my_server.bla/openhab-cloud/node_modules/express-form/lib/field.js:2:40)
at Module._compile (internal/modules/cjs/loader.js:1085:14)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
at Module.load (internal/modules/cjs/loader.js:950:32)
at Function.Module._load (internal/modules/cjs/loader.js:790:12)
at Module.require (internal/modules/cjs/loader.js:974:19)
at require (internal/modules/cjs/helpers.js:93:18)
at Object. (/var/www/my_server.bla/openhab-cloud/node_modules/express-form/lib/form.js:8:13)
at Module._compile (internal/modules/cjs/loader.js:1085:14)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
at Module.load (internal/modules/cjs/loader.js:950:32)
at Function.Module._load (internal/modules/cjs/loader.js:790:12)