# \[BUG-558\] Power chart not charting **URL:** \ **Category:** Ignition Early Access\ **Created:** [October 2, 2020, 6:15pm UTC](https://forum.inductiveautomation.com/t/bug-558-power-chart-not-charting/39322 "2020-10-02T18:15:31Z")\ **Posts on this page:** 1\ **Showing post:** 8
**Author:** ![Paul.Scott](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul.scott/32/4578_2.png) [@Paul.Scott](https://forum.inductiveautomation.com/u/Paul.Scott)\ **Post date:** [October 14, 2020, 10:31pm UTC](https://forum.inductiveautomation.com/t/bug-558-power-chart-not-charting/39322/8 "2020-10-14T22:31:22Z")
You guys should go through with the DMs you're planning, but I'm kinda wondering if what you're seeing is related to this: > [@8.1-rc2 Cannot pull tag history over gateway network](http://forum.inductiveautomation.com/t/8-1-rc2-cannot-pull-tag-history-over-gateway-network/39235/3): > > @mitchell-ACS, There have been changes to the licensing for the Tag Historian as of RC2 that will be in effect for 8.1.0. A Tag Historian license is now required for storing or querying history via Ignition or any 3rd party modules that use the Tag Historian APIs. Can you please confirm that both systems you are using for Tag History (central system and the remote system) have a licensed Tag Historian module or have the Tag Historian module in a Trial mode? Thanks, Garth To rule it out, are other historian components (i.e., Vision's Easy Chart) able to trend data points from those same points? --- _[View the full topic](https://forum.inductiveautomation.com/t/bug-558-power-chart-not-charting/39322)._