Hello! I have the similar problem on Apline 19.

prince http://yeslogic.com --baseurl https://www.princexml.com -o out.pdf --debug

Result:

prince: debug: init locking for OpenSSL
prince: debug: loading license: /usr/local/lib/prince/license/license.dat
prince: debug: loading /usr/local/lib/prince/license/license.dat because it is the main resource
prince: loading document: /usr/local/lib/prince/license/license.dat
prince: debug: loaded resource: /usr/local/lib/prince/license/license.dat
prince: debug: loaded resource: type: no
prince: loading style sheet: /usr/local/lib/prince/style/fonts.css
prince: debug: loaded resource: /usr/local/lib/prince/style/fonts.css
prince: debug: loaded resource: type: no
prince: debug: enabling parallel downloads
prince: Loading document...
prince: loading document: http://yeslogic.com/
prince: debug: [thread] loading http://yeslogic.com/

*** Mercury runtime: caught strange segmentation violation ***
PC at signal: 139814027861240 (7f28fd771cf8)
This may have been caused by a stack overflow, due to unbounded recursion.

Does anyone know what the problem is?

Which Prince package and version did you install?

Prince 15.4 includes a fix for a crash caused by OpenSSL which may fix this issue.