# Perspective data crash **URL:** \ **Category:** Ignition\ **Tags:** perspective, ignition81\ **Created:** [April 26, 2023, 12:09pm UTC](https://forum.inductiveautomation.com/t/perspective-data-crash/72916 "2023-04-26T12:09:18Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![AntoineF](https://avatars.discourse-cdn.com/v4/letter/a/4af34b/32.png) [@AntoineF](https://forum.inductiveautomation.com/u/AntoineF)\ **Post date:** [April 26, 2023, 12:09pm UTC](https://forum.inductiveautomation.com/t/perspective-data-crash/72916/1 "2023-04-26T12:09:18Z")
Hello everybody, I regularly (around once a day) have a problem with perspective crashing and not displaying data anymore : ![PV_Error2](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/b/4b5baa73e661a1bfd58327daba6c1371ea5a114a.png) It affects the 3 differents projects that are hosted on the gateway and the only way I can solve it is by stopping and starting the gateway. This 'central' gateway is collecting tags from 16 remote gateways (Ignition edge) and manages a total of 5360 tags. **Information** Ignition version : 8.1.25 Server OS : Windows server 2016 Java version : 11.0.17+8-LTS Here is an extract from the log file around the time it hapenned yesterday : [wrapper.log.txt](https://forum.inductiveautomation.com/uploads/short-url/wvYqhpp9rzvrXjlWsjktSBrWCT9.txt) (773.6 KB) Thank you in advance for reading in proposing clues on how to solve this problem. BR, Antoine. ---
**Author:** ![calimero100582](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/calimero100582/32/18630_2.png) [@calimero100582](https://forum.inductiveautomation.com/u/calimero100582)\ **Post date:** [April 26, 2023, 1:16pm UTC](https://forum.inductiveautomation.com/t/perspective-data-crash/72916/2 "2023-04-26T13:16:18Z")
It all depends on the circumstances, and it might be something totally different I am no expert in this, but I see Timeout in your log, which can means a connectivity problem or a load problem. As there is no Clock Drift in the logs, I would check connectivity problem. I see also warning in a user management view, making me think of authentication cookie expiration. I also noticed in the past that depending on how a gateway is closed, Perspective sessions does not react in the same way. In Windows, if I use gwcmd to close or restart the gateway, Perspective sessions will not get restored. If I close or restart the windows service, Perspective sessions are restored I would also fix some of the small issues I see in the log, to help identify the main cause. - NoneType handling: You have some script that crash due to NoneType, and it might causes other issues - Syntax error, bad indentation: some of your script are not runnable because of syntax error, and it might prevent other code to run - Theme manager issue: Some Apple users looked at the folder and created .ds\_store in the folder causing issue I also don't like this part of the log ```auto INFO | jvm 1 | 2023/04/25 10:07:24 | WARNING: An illegal reflective access operation has occurred INFO | jvm 1 | 2023/04/25 10:07:24 | WARNING: Illegal reflective access by com.inductiveautomation.ignition.gateway.util.IgnitionSocketImplFactory (file:/C:/Program%20Files/Inductive%20Automation/Ignition/lib/core/gateway/gateway-8.1.25.jar) to constructor java.net.SocksSocketImpl() INFO | jvm 1 | 2023/04/25 10:07:24 | WARNING: Please consider reporting this to the maintainers of com.inductiveautomation.ignition.gateway.util.IgnitionSocketImplFactory INFO | jvm 1 | 2023/04/25 10:07:24 | WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations INFO | jvm 1 | 2023/04/25 10:07:24 | WARNING: All illegal access operations will be denied in a future release ``` ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [April 26, 2023, 1:17pm UTC](https://forum.inductiveautomation.com/t/perspective-data-crash/72916/3 "2023-04-26T13:17:28Z")
> [@calimero100582](#): > > I also don't like this part of the log Don't worry about that, it's ugly, but that happens on startup for everybody. ---
**Author:** ![calimero100582](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/calimero100582/32/18630_2.png) [@calimero100582](https://forum.inductiveautomation.com/u/calimero100582)\ **Post date:** [April 26, 2023, 1:18pm UTC](https://forum.inductiveautomation.com/t/perspective-data-crash/72916/4 "2023-04-26T13:18:49Z")
Ok, so I was going to look at our own logs, so I will skip this step