Ensure to copy your n8n workflow and paste it in the code block, that is in between the pairs of triple backticks, which also could be achieved by clicking </> (preformatted text) in the editor and pasting in your workflow.
```
<your workflow>
```
Make sure that you’ve removed any sensitive information from your workflow and include dummy data or pinned data as much as you can!
I haven’t used Railway to know this first hand but the error error:1C800064:Provider routines::bad decrypt in Railway suggests a decryption failure, often caused by an incorrect encryption key. Do you have the N8N_ENCRYPTION_KEY env var set?