500 Internal Server Error while generating PDF for Print Designer formats in ERPNext v15

asieftejani · February 2, 2026, 6:58am

Try to add “host_name”: “https://erpvps.desaitechindia.com:8000” as key:value to sites/<site_name>/site_config.json

github.com/frappe/frappe_docker

wkhtmltopdf error everytime i compose

opened 01:56PM - 20 Aug 25 UTC

closed 12:11AM - 05 Dec 25 UTC

asieftejani

enhancement no-issue-activity

Everytime I spin up the containers for production and need pdf i need to fix thi…s error which I get: - OSError: wkhtmltopdf reported an error: Exit with code 1 due to network error: ConnectionRefusedError Need to add "host_name": "http://frontend:8080" as key:value to sites/frontend/site_config.json Please do you think you can automate this in future releases in case it effects others also Thanks for an amazing product

github.com/frappe/frappe_docker

Hostname Configuration Issues for Print Formats and Links with docker-compose (pwd.yml) or easy-install.py

opened 05:01AM - 15 Jan 25 UTC

edardev

bug

# **Hostname Configuration Issues for Print Formats and Links with `docker-compo…se` (`pwd.yml`) or `easy-install.py`** ## **Description** When using `docker-compose` (`pwd.yml`) or `easy-install.py`, the `host_name` must be set to the frontend service's Docker-assigned IP and port, or the service name, for print formats and email attachments to work. For example, this command resolves the issue for print formats and attachments: ```bash bench --site sub.domain.com set-config host_name frontend:8080 ``` However, this causes links in emails and/others places to use `http://frontend:8080/...` instead of the actual domain name like `https://sub.domain.com/...`. --- ## **Expected Behavior** - Links in emails and apps should use the real domain name (`https://sub.domain.com/...`). - Print formats and attachments should work without requiring `host_name` to be set to `frontend:8080`. --- ## **Actual Behavior** - Print formats and email attachments fail unless `host_name` is set to `frontend:8080`. - Links in emails and apps are incorrect when using `frontend:8080` in `host_name`. --- ## **Environment** - **Docker Compose Setup**: `pwd.yml` - **Installation Method**: `easy-install.py` --- ![Image](https://github.com/user-attachments/assets/42548f05-43df-44a2-b167-5d1abd6a4a93) ![Image](https://github.com/user-attachments/assets/89dfc5c6-15a4-40e8-aec1-c14b7b0cac4b) ![Image](https://github.com/user-attachments/assets/19c38e30-d52e-4749-9ffc-18e68c88a996)