Chart generation failed: null no more Informations

  • Platform information:
    • Hardware: amd64/8GB/32GB SSD 500GB SSHD (Database)

    • OS: archlinux

    • Java Runtime Environment:

      openjdk version "1.8.0_192"
      OpenJDK Runtime Environment (build 1.8.0_192-b26)
      OpenJDK 64-Bit Server VM (build 25.192-b26, mixed mode)
      
    • openHAB version:

      openhab2 2.3.0-1
      
  • Issue of the topic:

Chart is not shown in HABPanel
Image Url: https://x.x.x.x/chart?items=Wetterinformation_Temperature&theme=black&period=h&h=287&w=1220

The console log shows only the message:

    21:46:46.941 [WARN ] [rthome.ui.internal.chart.ChartServlet] - Chart generation failed: null

Even if I set the log level to DEBUG

Database Persistence is working see here:

    MariaDB [openHAB_1]> select * from item0002;
    +-------------------------+-------+
    | time                    | value |
    +-------------------------+-------+
    | 2018-11-08 21:19:00.155 |    10 |
    | 2018-11-08 21:20:00.048 |    10 |
    | 2018-11-08 21:21:00.038 |    10 |
    | 2018-11-08 21:22:00.028 |    10 |
    | 2018-11-08 21:23:00.027 |    10 |
    | 2018-11-08 21:24:00.021 |    10 |
    | 2018-11-08 21:25:00.017 |    10 |
    | 2018-11-08 21:26:00.015 |    10 |
    | 2018-11-08 21:27:00.019 |    10 |
    | 2018-11-08 21:28:00.012 |    10 |
    | 2018-11-08 21:29:00.011 |    10 |
    | 2018-11-08 21:30:00.012 |    10 |
    | 2018-11-08 21:31:00.013 |    10 |
    | 2018-11-08 21:32:00.012 |    10 |
    | 2018-11-08 21:33:00.010 |    10 |
    | 2018-11-08 21:34:00.011 |    10 |
    | 2018-11-08 21:35:00.015 |    10 |
    | 2018-11-08 21:36:00.010 |    10 |
    | 2018-11-08 21:37:00.013 |    10 |
    | 2018-11-08 21:38:00.009 |    10 |
    | 2018-11-08 21:39:00.009 |    10 |
    | 2018-11-08 21:40:00.009 |    10 |
    | 2018-11-08 21:41:00.009 |    10 |
  • Please post configurations (if applicable):
    • All Configuration is created by PaperUI
  • If logs where generated please post these here using code fences: