Charts/Metacharts loading issue on RPi4 after upgrade to November 3, 2026 build (ver. 6.4). **solved**

[zakos52]

After upgrading from version 6.4 (September 18/19, 2026) to the November 3, 2026 build on RPi4, local and remote charts as well as metacharts fail to load. As soon as I revert back to version 6.3, EVERYTHING works correctly!

Platform: Raspberry Pi 4 Model B Rev 1.1   Rev 1.1
RAM: 3895 MB total, 3746 MB free (3% used)
Storage: ATP SLC, 1.5 GB total, 722 MB free (53% used, 254.2 yrs)
SW Version: Meteobridge 6.4 (Nov 3 2026, build 4380), FW 1.3
Uptime: 0 hours, 59 minutes    Buffer: 3 items (0%)

[grwkak]

Seeing the same thing. Logs say cannot open metachart file "Ecowitt%20snow.metachart": Invalid argument (as an example).
Also, I can't edit any existing charts.

Guy

[zakos52]

The problem must be fixed IMMEDIATELY with a new update!

[admin]

That can be a side effect of hardening the chart.cgi to fix a XSS vulnerability.
Problem is presumably related to spaces used in chart names. I will have a look.

[admin]

Just released update should have it fixed. if not please drop an email directly to me: info(at)meteobridge.com

[zakos52]

I sent an email to info(at)meteobridge.com

[admin]

thanks, that helped a lot fixing the bug. New version should now work fine.

[zakos52]

I sent again an email to info(at)meteobridge.com