Getting Error: unable to determine transport target for "pino-pretty"

[jcarron2]

Hi,
I am trying to get Lynkr 4.0.0 ( pull from github on Jan13), and have managed to install it, but get the below error when trying to launch it.

Original install:
`jc@claude-ubuntu-2004:~/Lynkr$ sudo npm install -g lynkr
[sudo] password for jc:

added 185 packages in 7m

37 packages are looking for funding
run npm fund for details
npm notice
npm notice New major version of npm available! 10.9.4 -> 11.7.0
npm notice Changelog: https://github.com/npm/cli/releases/tag/v11.7.0
npm notice To update run: npm install -g npm@11.7.0
npm notice
`

Error message:
jc@claude-ubuntu-2004:~/Lynkr$ lynkr start /usr/lib/node_modules/lynkr/node_modules/pino/lib/transport.js:146 throw new Error(unable to determine transport target for "${origin}"`)
^

Error: unable to determine transport target for "pino-pretty"
at fixTarget (/usr/lib/node_modules/lynkr/node_modules/pino/lib/transport.js:146:13)
at transport (/usr/lib/node_modules/lynkr/node_modules/pino/lib/transport.js:116:22)
at normalizeArgs (/usr/lib/node_modules/lynkr/node_modules/pino/lib/tools.js:316:16)
at pino (/usr/lib/node_modules/lynkr/node_modules/pino/pino.js:90:28)
at Object. (/usr/lib/node_modules/lynkr/src/logger/index.js:4:16)
at Module._compile (node:internal/modules/cjs/loader:1706:14)
at Object..js (node:internal/modules/cjs/loader:1839:10)
at Module.load (node:internal/modules/cjs/loader:1441:32)
at Function._load (node:internal/modules/cjs/loader:1263:12)
at TracingChannel.traceSync (node:diagnostics_channel:328:14)

Node.js v22.21.0
`
I did some googling, and found some references to this package 'pino-pretty' missing, so checked, confirmed and installed it

jc@claude-ubuntu-2004:~$ npm list pino-pretty
/home/jc
└── (empty)

jc@claude-ubuntu-2004:~$ npm i --save-dev pino-pretty

added 19 packages in 10s

3 packages are looking for funding
run npm fund for details
jc@claude-ubuntu-2004:~$ npm list pino-pretty
jc@ /home/jc
└── pino-pretty@13.1.3

Try again, same issue.

I continue digging and tried updating my node.js from v22 to v24, to no avail either

jc@claude-ubuntu-2004:~$ lynkr /usr/lib/node_modules/lynkr/node_modules/pino/lib/transport.js:146 throw new Error(unable to determine transport target for "${origin}"`)
^

Error: unable to determine transport target for "pino-pretty"
at fixTarget (/usr/lib/node_modules/lynkr/node_modules/pino/lib/transport.js:146:13)
at transport (/usr/lib/node_modules/lynkr/node_modules/pino/lib/transport.js:116:22)
at normalizeArgs (/usr/lib/node_modules/lynkr/node_modules/pino/lib/tools.js:316:16)
at pino (/usr/lib/node_modules/lynkr/node_modules/pino/pino.js:90:28)
at Object. (/usr/lib/node_modules/lynkr/src/logger/index.js:4:16)
at Module._compile (node:internal/modules/cjs/loader:1761:14)
at Object..js (node:internal/modules/cjs/loader:1893:10)
at Module.load (node:internal/modules/cjs/loader:1481:32)
at Module._load (node:internal/modules/cjs/loader:1300:12)
at TracingChannel.traceSync (node:diagnostics_channel:328:14)

Node.js v24.13.0
`

Any ideas?

[jcarron2]

I tried enabling logging;

jc@claude-ubuntu-2004:~$ export LOG_LEVEL=debug jc@claude-ubuntu-2004:~$ lynkr start

Perhaps not a smart idea, but I tried the --force switch ... I suspect upgrading NodeJS to the newer version has caused the compile to fail now... ugh. (RE: 1164 error g++: error: unrecognized command line option ‘-std=gnu++20’; did you mean ‘-std=gnu++2a’?)

jc@claude-ubuntu-2004:~$ sudo npm install -g lynkr --force [sudo] password for jc: npm warn using --force Recommended protections disabled. npm error code 1 npm error path /usr/lib/node_modules/lynkr/node_modules/tree-sitter-python npm error command failed npm error command sh -c node-gyp rebuild npm error make: Entering directory '/usr/lib/node_modules/lynkr/node_modules/tree-sitter-python/build' npm error CXX(target) Release/obj.target/tree_sitter_python_binding/bindings/node/binding.o npm error make: Leaving directory '/usr/lib/node_modules/lynkr/node_modules/tree-sitter-python/build' npm error gyp info it worked if it ends with ok npm error gyp info using node-gyp@11.4.2 npm error gyp info using node@24.13.0 | linux | x64 npm error gyp info find Python using Python version 3.8.10 found at "/usr/bin/python3" npm error gyp http GET https://nodejs.org/download/release/v24.13.0/node-v24.13.0-headers.tar.gz npm error gyp http 200 https://nodejs.org/download/release/v24.13.0/node-v24.13.0-headers.tar.gz npm error gyp http GET https://nodejs.org/download/release/v24.13.0/SHASUMS256.txt npm error gyp http 200 https://nodejs.org/download/release/v24.13.0/SHASUMS256.txt npm error gyp info spawn /usr/bin/python3 npm error gyp info spawn args [ npm error gyp info spawn args '/usr/lib/node_modules/npm/node_modules/node-gyp/gyp/gyp_main.py', npm error gyp info spawn args 'binding.gyp', npm error gyp info spawn args '-f', npm error gyp info spawn args 'make', npm error gyp info spawn args '-I', npm error gyp info spawn args '/usr/lib/node_modules/lynkr/node_modules/tree-sitter-python/build/config.gypi', npm error gyp info spawn args '-I', npm error gyp info spawn args '/usr/lib/node_modules/npm/node_modules/node-gyp/addon.gypi', npm error gyp info spawn args '-I', npm error gyp info spawn args '/root/.cache/node-gyp/24.13.0/include/node/common.gypi', npm error gyp info spawn args '-Dlibrary=shared_library', npm error gyp info spawn args '-Dvisibility=default', npm error gyp info spawn args '-Dnode_root_dir=/root/.cache/node-gyp/24.13.0', npm error gyp info spawn args '-Dnode_gyp_dir=/usr/lib/node_modules/npm/node_modules/node-gyp', npm error gyp info spawn args '-Dnode_lib_file=/root/.cache/node-gyp/24.13.0/<(target_arch)/node.lib', npm error gyp info spawn args '-Dmodule_root_dir=/usr/lib/node_modules/lynkr/node_modules/tree-sitter-python', npm error gyp info spawn args '-Dnode_engine=v8', npm error gyp info spawn args '--depth=.', npm error gyp info spawn args '--no-parallel', npm error gyp info spawn args '--generator-output', npm error gyp info spawn args 'build', npm error gyp info spawn args '-Goutput_dir=.' npm error gyp info spawn args ] npm error gyp info spawn make npm error gyp info spawn args [ 'BUILDTYPE=Release', '-C', 'build' ] npm error g++: error: unrecognized command line option ‘-std=gnu++20’; did you mean ‘-std=gnu++2a’? npm error make: *** [tree_sitter_python_binding.target.mk:119: Release/obj.target/tree_sitter_python_binding/bindings/node/binding.o] Error 1 npm error gyp ERR! build error npm error gyp ERR! stack Error:makefailed with exit code: 2 npm error gyp ERR! stack at ChildProcess.<anonymous> (/usr/lib/node_modules/npm/node_modules/node-gyp/lib/build.js:219:23) npm error gyp ERR! System Linux 5.4.0-216-generic npm error gyp ERR! command "/usr/bin/node" "/usr/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild" npm error gyp ERR! cwd /usr/lib/node_modules/lynkr/node_modules/tree-sitter-python npm error gyp ERR! node -v v24.13.0 npm error gyp ERR! node-gyp -v v11.4.2 npm error gyp ERR! not ok npm error A complete log of this run can be found in: /root/.npm/_logs/2026-01-14T05_02_48_176Z-debug-0.log jc@claude-ubuntu-2004:~$ cd Lynkr/ jc@claude-ubuntu-2004:~/Lynkr$ sudo npm install -g lynkr --force npm warn using --force Recommended protections disabled. npm warn cleanup Failed to remove some directories [ npm warn cleanup [ npm warn cleanup '/usr/lib/node_modules/lynkr/node_modules/better-sqlite3', npm warn cleanup [Error: ENOTEMPTY: directory not empty, rmdir '/usr/lib/node_modules/lynkr/node_modules/better-sqlite3'] { npm warn cleanup errno: -39, npm warn cleanup code: 'ENOTEMPTY', npm warn cleanup syscall: 'rmdir', npm warn cleanup path: '/usr/lib/node_modules/lynkr/node_modules/better-sqlite3' npm warn cleanup } npm warn cleanup ], npm warn cleanup [ npm warn cleanup '/usr/lib/node_modules/lynkr/node_modules/tree-sitter', npm warn cleanup [Error: ENOTEMPTY: directory not empty, rmdir '/usr/lib/node_modules/lynkr/node_modules/tree-sitter'] { npm warn cleanup errno: -39, npm warn cleanup code: 'ENOTEMPTY', npm warn cleanup syscall: 'rmdir', npm warn cleanup path: '/usr/lib/node_modules/lynkr/node_modules/tree-sitter' npm warn cleanup } npm warn cleanup ], npm warn cleanup [ npm warn cleanup '/usr/lib/node_modules/lynkr', npm warn cleanup [Error: ENOTEMPTY: directory not empty, rmdir '/usr/lib/node_modules/lynkr/node_modules/tree-sitter'] { npm warn cleanup errno: -39, npm warn cleanup code: 'ENOTEMPTY', npm warn cleanup syscall: 'rmdir', npm warn cleanup path: '/usr/lib/node_modules/lynkr/node_modules/tree-sitter' npm warn cleanup } npm warn cleanup ], npm warn cleanup [ npm warn cleanup '/usr/lib/node_modules/lynkr', npm warn cleanup [Error: ENOTEMPTY: directory not empty, rmdir '/usr/lib/node_modules/lynkr/node_modules/tree-sitter'] { npm warn cleanup errno: -39, npm warn cleanup code: 'ENOTEMPTY', npm warn cleanup syscall: 'rmdir', npm warn cleanup path: '/usr/lib/node_modules/lynkr/node_modules/tree-sitter' npm warn cleanup } npm warn cleanup ], npm warn cleanup [ npm warn cleanup '/usr/lib/node_modules/lynkr/node_modules', npm warn cleanup [Error: ENOTEMPTY: directory not empty, rmdir '/usr/lib/node_modules/lynkr/node_modules/tree-sitter'] { npm warn cleanup errno: -39, npm warn cleanup code: 'ENOTEMPTY', npm warn cleanup syscall: 'rmdir', npm warn cleanup path: '/usr/lib/node_modules/lynkr/node_modules/tree-sitter' npm warn cleanup } npm warn cleanup ] npm warn cleanup ] npm error code 1 npm error path /usr/lib/node_modules/lynkr/node_modules/tree-sitter-python npm error command failed npm error command sh -c node-gyp rebuild npm error make: Entering directory '/usr/lib/node_modules/lynkr/node_modules/tree-sitter-python/build' npm error CXX(target) Release/obj.target/tree_sitter_python_binding/bindings/node/binding.o npm error make: Leaving directory '/usr/lib/node_modules/lynkr/node_modules/tree-sitter-python/build' npm error gyp info it worked if it ends with ok npm error gyp info using node-gyp@11.4.2 npm error gyp info using node@24.13.0 | linux | x64 npm error gyp info find Python using Python version 3.8.10 found at "/usr/bin/python3" npm error gyp info spawn /usr/bin/python3 npm error gyp info spawn args [ npm error gyp info spawn args '/usr/lib/node_modules/npm/node_modules/node-gyp/gyp/gyp_main.py', npm error gyp info spawn args 'binding.gyp', npm error gyp info spawn args '-f', npm error gyp info spawn args 'make', npm error gyp info spawn args '-I', npm error gyp info spawn args '/usr/lib/node_modules/lynkr/node_modules/tree-sitter-python/build/config.gypi', npm error gyp info spawn args '-I', npm error gyp info spawn args '/usr/lib/node_modules/npm/node_modules/node-gyp/addon.gypi', npm error gyp info spawn args '-I', npm error gyp info spawn args '/root/.cache/node-gyp/24.13.0/include/node/common.gypi', npm error gyp info spawn args '-Dlibrary=shared_library', npm error gyp info spawn args '-Dvisibility=default', npm error gyp info spawn args '-Dnode_root_dir=/root/.cache/node-gyp/24.13.0', npm error gyp info spawn args '-Dnode_gyp_dir=/usr/lib/node_modules/npm/node_modules/node-gyp', npm error gyp info spawn args '-Dnode_lib_file=/root/.cache/node-gyp/24.13.0/<(target_arch)/node.lib', npm error gyp info spawn args '-Dmodule_root_dir=/usr/lib/node_modules/lynkr/node_modules/tree-sitter-python', npm error gyp info spawn args '-Dnode_engine=v8', npm error gyp info spawn args '--depth=.', npm error gyp info spawn args '--no-parallel', npm error gyp info spawn args '--generator-output', npm error gyp info spawn args 'build', npm error gyp info spawn args '-Goutput_dir=.' npm error gyp info spawn args ] npm error gyp info spawn make npm error gyp info spawn args [ 'BUILDTYPE=Release', '-C', 'build' ] npm error g++: error: unrecognized command line option ‘-std=gnu++20’; did you mean ‘-std=gnu++2a’? npm error make: *** [tree_sitter_python_binding.target.mk:119: Release/obj.target/tree_sitter_python_binding/bindings/node/binding.o] Error 1 npm error gyp ERR! build error npm error gyp ERR! stack Error:make` failed with exit code: 2
npm error gyp ERR! stack at ChildProcess. (/usr/lib/node_modules/npm/node_modules/node-gyp/lib/build.js:219:23)
npm error gyp ERR! System Linux 5.4.0-216-generic
npm error gyp ERR! command "/usr/bin/node" "/usr/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
npm error gyp ERR! cwd /usr/lib/node_modules/lynkr/node_modules/tree-sitter-python
npm error gyp ERR! node -v v24.13.0
npm error gyp ERR! node-gyp -v v11.4.2
npm error gyp ERR! not ok
npm error A complete log of this run can be found in: /root/.npm/_logs/2026-01-14T05_04_21_385Z-debug-0.log
jc@claude-ubuntu-2004:~/Lynkr$ journalctl -u lynkr -f
-- Logs begin at Thu 2021-08-05 03:23:23 UTC. --

`
debug file attached...

2026-01-14T05_04_21_385Z-debug-0.log

[jcarron2]

Thank you for trying out the product
I will take a look and circle back
In the meantime to unblock you
Can you try cloning the repo and build from source

[jcarron2]

Thank you for creating the product to begin with !
... I am not sure what you mean by unblock?

I managed to get a bit further by rolling back to NodeJS v22.21.0, and have it somewhat working ( currently lynkr spits "WARN (claude-backend): Operational error "Service temporarily overloaded. Please retry after a few seconds." status code 503" when I try anything beyond a simple request - will open a new discussion for that.

Please let me know if there is anything else I can provide to help figure that out, hopefully others avoid it.

`root@claude-ubuntu-2004:/home/jc/Lynkr# npm install -g --force
npm warn using --force Recommended protections disabled.
npm error code ENOTEMPTY
npm error syscall rename
npm error path /usr/lib/node_modules/lynkr
npm error dest /usr/lib/node_modules/.lynkr-lZiEj79M
npm error errno -39
npm error ENOTEMPTY: directory not empty, rename '/usr/lib/node_modules/lynkr' -> '/usr/lib/node_modules/.lynkr-lZiEj79M'
npm error A complete log of this run can be found in: /root/.npm/_logs/2026-01-14T05_44_16_529Z-debug-0.log
root@claude-ubuntu-2004:/home/jc/Lynkr# vi /root/.npm/_logs/2026-01-14T05_44_16_529Z-debug-0.log
root@claude-ubuntu-2004:/home/jc/Lynkr# cd ^C
root@claude-ubuntu-2004:/home/jc/Lynkr# cd /usr/lib/node_modules
root@claude-ubuntu-2004:/usr/lib/node_modules# mv lynkr/ lynkr.broken
root@claude-ubuntu-2004:/usr/lib/node_modules# cd ~jc
root@claude-ubuntu-2004:/home/jc# cd Lynkr
root@claude-ubuntu-2004:/home/jc/Lynkr#
root@claude-ubuntu-2004:/home/jc/Lynkr#
root@claude-ubuntu-2004:/home/jc/Lynkr# npm install -g --force
npm warn using --force Recommended protections disabled.

added 1 package in 892ms
root@claude-ubuntu-2004:/home/jc/Lynkr# lynkr
Claude→Databricks proxy listening on http://localhost:8080
[2026-01-14 05:46:02.347 +0000] INFO (claude-backend): SQLite session store initialised
env: "development"
dbPath: "/home/jc/Lynkr/data/sessions.db"
[2026-01-14 05:46:02.706 +0000] INFO (claude-backend): Prompt cache initialized with persistent storage
env: "development"
dbPath: "/home/jc/Lynkr/data/prompt-cache.db"
[2026-01-14 05:46:02.843 +0000] INFO (claude-backend): Rate limiter initialized
env: "development"
enabled: true
windowMs: 60000
max: 100
keyBy: "session"
windowMinutes: 1
[2026-01-14 05:46:03.605 +0000] INFO (claude-backend): Web HTTP agent initialized with connection pooling
env: "development"
connections: 50
keepAliveTimeout: 60000
pipelining: 10
`

[vishalveerareddy123]

Hi Sorry for being late
The global installation of lynkr is missing the pino-pretty dependency .
Install Missing Dependency
npm install -g pino-pretty
and then set the env variables and. run lynkr start
Global npm installations sometimes don't install optional peer dependencies like pino-pretty. It's listed as an optional dependency in pino, so npm might skip it.

[vishalveerareddy123]