while trying out the embedded web-server, choosing the fonttest will fail and cause the server to crash $ mtxrun --script server --auto mtx-server | running at port: 8088 mtx-server | document root: /home/vm/data/context/tex/texmf-context/scripts/context/lua mtx-server | main index file: unknown mtx-server | scripts subpath: /home/vm/data/context/tex/texmf-context/scripts/context/lua mtx-server | context services: http://localhost:8088/mtx-server-ctx-startup.lua mtx-server | request from: 127.0.0.1 mtx-server | request data: GET /mtx-server-ctx-startup.lua HTTP/1.1 mtx-server | requested url: /mtx-server-ctx-startup.lua mtx-server | requested action: /mtx-server-ctx-startup.lua mtx-server | performing action: /mtx-server-ctx-startup.lua mtx-server | locating script: /home/vm/data/context/tex/texmf-context/scripts/context/lua/mtx-server-ctx-startup.lua mtx-server | loading script: /home/vm/data/context/tex/texmf-context/scripts/context/lua/mtx-server-ctx-startup.lua mtx-server | return type: function mtx-server | saving script: function mtx-server | running script: /home/vm/data/context/tex/texmf-context/scripts/context/lua/mtx-server-ctx-startup.lua mtx-server | request from: 127.0.0.1 mtx-server | request data: GET /favicon.ico HTTP/1.1 mtx-server | requested url: /favicon.ico mtx-server | requested action: /favicon.ico mtx-server | performing action: /favicon.ico mtx-server | requested file: /favicon.ico mtx-server | unknown file: /favicon.ico mtx-server | handling error 404: Not Found mtx-server | request from: 127.0.0.1 mtx-server | request data: GET /mtx-server-ctx-fonttest.lua HTTP/1.1 mtx-server | requested url: /mtx-server-ctx-fonttest.lua mtx-server | requested action: /mtx-server-ctx-fonttest.lua mtx-server | performing action: /mtx-server-ctx-fonttest.lua mtx-server | locating script: /home/vm/data/context/tex/texmf-context/scripts/context/lua/mtx-server-ctx-fonttest.lua mtx-server | loading script: /home/vm/data/context/tex/texmf-context/scripts/context/lua/mtx-server-ctx-fonttest.lua mtx-server | return type: function lua error : ...ext/tex/texmf-context/tex/context/base/mkiv/font-hsh.lua:12: attempt to index a nil value (global 'font')