# Starting prometheus-node-exporter-lua fails with uhttpd error

**URL:** <https://forum.openwrt.org/t/starting-prometheus-node-exporter-lua-fails-with-uhttpd-error/255377>\
**Category:** Installing and Using OpenWrt\
**Created:** [November 10, 2026, 7:53pm UTC](https://forum.openwrt.org/t/starting-prometheus-node-exporter-lua-fails-with-uhttpd-error/255377 "2026-11-10T19:53:36Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Clayton256](https://forum.openwrt.org/user_avatar/forum.openwrt.org/clayton256/32/135410_2.png) [@Clayton256](https://forum.openwrt.org/u/Clayton256)\
**Post date:** [November 10, 2026, 7:53pm UTC](https://forum.openwrt.org/t/starting-prometheus-node-exporter-lua-fails-with-uhttpd-error/255377/1 "2026-11-10T19:53:36Z")

</div>

When I try to start prometheus-node-exporter-lua I'm getting an error in the log:

```plaintext
Tue Nov 10 13:29:33 2026 daemon.err uhttpd[6718]: Error loading Lua handler: cannot open : No such file or directory
Tue Nov 10 13:29:33 2026 daemon.info procd: Instance prometheus-node-exporter-lua::instance1 s in a crash loop 6 crashes, 1 seconds since last crash

```

I confirmed the error is from launching uhttpd by running the command:

```plaintext
➜ ~ /usr/sbin/uhttpd -f -c /dev/null -l / -L /usr/bin/prometheus-node-exporter-lua -k 70 -p 10.1.4.2:9100
Error loading Lua handler: cannot open : No such file or directory

```

The exporter runs fine from the command line.  
Anyone have an idea where to look next?