Various errors and solutions encountered when using SAP Fiori Tools to deploy SAP UI5 applications to ABAP servers

error 1

(node:28340) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'customMiddleware' of undefined

at handleABAP (C:\Code\UI5\Walkthrough\35\node_modules\@sap\ux-ui5-tooling\dist\cli\cmd\add-deploy-config.js:113:29)

Cause of error: The version of Fiori tools CLI used is too low.

"@sap/ux-ui5-tooling": "1.0.10"

https://www.npmjs.com/package/@sap/ux-ui5-tooling

Workaround: Use the latest 1.4.7 version:

error message 2

Error: Cannot find proxy middleware config in [C:\Code\UI5\Walkthrough\35\ui5.yaml]

at f (C:\app\node-v12.18.3-win-x64\node_modules\@sap\generator-fiori\generators\deployment-generator\abap\index.js:2:616172)
at Object.r.handleErrorMessage (C:\app\node-v12.18.3-win-x64\node_modules\@sap\generator-fiori\generators\deployment-generator\abap\index.js:2:616358)

Error reason: The content of the ui5.yaml file is incomplete.

At least the fiori-tools-proxy area should be included.

Refer to a properly formatted ui5.yaml :

specVersion: '1.0'
metadata:
  name: 'project1'
type: application
ui5Theme: sap_fiori_3
server:
  customMiddleware:
  - name: fiori-tools-proxy
    afterMiddleware: compression
    configuration:
      ignoreCertError: false # If set to true, certificate errors will be ignored. E.g. self-signed certificates will be accepted
      backend:
      - path: /sap/opu/odata
        url: http://localhost
      ui5:
        path: 
        - /resources
        - /test-resources
        url: https://ui5.sap.com
        version:  # The UI5 version, for instance, 1.78.1. Empty means latest version
  - name: fiori-tools-appreload
    afterMiddleware: compression
    configuration:
     port: 35729
     path: webapp

error message 3

info builder:custom deploy-to-abap Create Archive
info builder:custom deploy-to-abap Starting Deployment.on project1 � (11/11) Running task deploy-to-abap...
WARN builder:custom deploy-to-abap Connecting without any credentials, deployment may fail if authorization is required
ERR! builder:custom deploy-to-abap Deployment Failed.tion project1 � (11/11) Running task deploy-to-abap...
ERR! builder:custom deploy-to-abap getaddrinfo ENOTFOUND aa

The reason is that the deploy-to-abap of the custom task target in the ui5-deploy.yaml file, that is, the url maintenance of the remote ABAP system is incorrect.

If you see the prompt message shown above:

The deployment destination requires authentication. Please enter your credentials below
? Username:

Indicates that the ABAP system is successfully connected.

error message 4

Upload canceled, archive could not be read or appears to be empty

The error message is the same as described in this post .

This error is related to version SAP UI5 tools .

For the SAP generator-easy-ui5 project created with SAP UI5 tools , the default version number of 0621b7ce01123e is as shown below:

"devDependencies": {
        "@ui5/cli": "^2.11.1",
        "@ui5/fs": "^2.0.6",
        "@ui5/logger": "^2.0.1",
        "@sap/ux-ui5-tooling": "1",
        "rimraf": "3.0.2"
    },
    "ui5": {
        "dependencies": [
            "@sap/ux-ui5-tooling"
        ]
    }

Solution: delete package-lock.json file and node_modules folder,

Execute the command line to install the latest version: