Need help reducing false positive notifications

[wmarcolin]

Hi!

After several tests, restarting the computer where the MSR is, and the MSR itself by Tools > Restart, I have a persistent error in the logs.

Looking at the global expression (screen below), I see that it is highlighted as an error, however, if I look at two other expressions above that have the same structure, they do not present an error, so I do not think the problem is with the expression's code.

This expression uses a group, which validates 4 devices of type door sensor, whether the status is true or false, door open or closed.

        "dgc_entrance_open":
          name: DGC Entrance Open
          select:
            - include_entity: 
              - "hubitat>37"
              - "hubitat>38"
              - "hubitat>99"
              - "hubitat>130"
          filter_expression: > 
            entity.attributes?.door_sensor?.state == true

I also compared it with other groups, the structure is identical.

Looking at the 4 devices in this group, I see that all are active in the MSR, have similar variables, are used in other groups and rules that do not present a problem.

Looking at the log, I understand that it refers to some object that would be null, at which point I am lost on what to actually look at.

[latest-22118]2022-05-02T22:33:11.711Z <Engine:INFO> Reaction Engine starting
[latest-22118]2022-05-02T22:33:11.719Z <Engine:INFO> Checking rule sets...
[latest-22118]2022-05-02T22:33:11.746Z <Engine:INFO> Checking rules...
[latest-22118]2022-05-02T22:33:11.748Z <Engine:INFO> Data check complete; no corrections.
[latest-22118]2022-05-02T22:33:11.892Z <Engine:ERR> [Engine]Engine#1: error evaluating expression EntranceOPEN: [ReferenceError]ReferenceError: Invalid scope in reference to member attributes of (object)null
[latest-22118]2022-05-02T22:33:11.893Z <Engine:ERR> [Engine]Engine#1: expression: sort(each id in ( getEntity('groups>dgc_entrance_open').attributes.sys_group.members ): getEntity(id).name)
[latest-22118]2022-05-02T22:33:11.894Z <Engine:CRIT> ReferenceError: Invalid scope in reference to member attributes of (object)null
ReferenceError: Invalid scope in reference to member attributes of (object)null
    at _run (C:\MSR\reactor\common\lexp.js:1449:31)
    at _run (C:\MSR\reactor\common\lexp.js:1443:33)
    at _run (C:\MSR\reactor\common\lexp.js:1443:33)
    at _run (C:\MSR\reactor\common\lexp.js:1536:38)
    at _run (C:\MSR\reactor\common\lexp.js:1480:33)
    at C:\MSR\reactor\common\lexp.js:1283:29
    at Array.forEach (<anonymous>)
    at _run (C:\MSR\reactor\common\lexp.js:1282:28)
    at run (C:\MSR\reactor\common\lexp.js:1663:22)
    at Object.evaluate (C:\MSR\reactor\common\lexp.js:1699:20)
[latest-22118]2022-05-02T22:33:12.232Z <Engine:NOTICE> Reaction Engine running!
[latest-22118]2022-05-02T22:33:12.233Z <Rule:INFO> Rule#rule-kxjp2el2 (Mode DAY) started
[latest-22118]2022-05-02T22:33:12.234Z <Rule:INFO> Rule#rule-kxjp7kc8 (Mode EVENING) started
[latest-22118]2022-05-02T22:33:12.234Z <Rule:INFO> Rule#rule-kxjparz7 (Mode NIGHT) started
[latest-22118]2022-05-02T22:33:12.234Z <Rule:INFO> Rule#rule-kxjpd0d6 (Mode AWAY ∆) started
[latest-22118]2022-05-02T22:33:12.235Z <Rule:INFO> Rule#rule-kxjqrcr9 (Mode PARTY) started
[latest-22118]2022-05-02T22:33:12.235Z <Rule:INFO> Rule#rule-kxjqyhnu (Mode VACATION ∆) started

Finally, if I return the expression and press the Try This Expression button, it is executed and the error disappears.

This situation started to occur on the latest version of Reactor 22118, on a Windows 10 Bare Metal installation. Does anyone have a similar scenario?

Sorry for the long post, I tried to document as best as possible to try to identify the problem.

Thanks.

[toggledbits]

Have you looked at the entity contents for groups>dgc_entrance_open? That's what it's complaining about.

[wmarcolin]

@toggledbits

I had not looked at it as an entity, but when comparing it now with others of similar group function, I see no difference in structure that might help understand the error.

Thanks.

[toggledbits]

You should have a file in the storage/entities/groups directory called dgc_entrance_open. Can you please post its contents?

[wmarcolin]

@toggledbits

{
    "id": "dgc_entrance_open",
    "type": "Group",
    "name": "DGC Entrance Open",
    "source_id": null,
    "_lastupdate": 1651610485346,
    "deadsince": false,
    "can_rename": true,
    "can_delete": true,
    "primary_attribute": "sys_group.empty",
    "_attributes": {
        "sys_group": {
            "members": [],
            "empty": true
        }
    },
    "actions": {},
    "capabilities": {
        "sys_group": {
            "attributes": {
                "members": {
                    "type": "array",
                    "default": []
                },
                "empty": {
                    "type": "bool",
                    "default": true
                }
            },
            "actions": {}
        }
    },
    "notify_member_changed": true,
    "serialize_version": 2
}

Thaks.

[toggledbits]

OK, and let's be clear... does this happen on every restart, and only on this global variable? You have cleared the alert and restarted and verified that the alert returns?

[wmarcolin]

@toggledbits

Every time I perform a restart, the error appears, and always and only in this variable.

I clear the message, restart the variable and everything is fine. If I restart the MSR again, then the whole error scenario comes back.

Thanks.

[wmarcolin]

@toggledbits

ATTENTION: I have just installed the new version 22123, a new installation procedure, and the error does not happen.

I have tested restarting the MSR by Service and Tools > Restart.

We can close this discussion.

Thanks.

[toggledbits]

OK, but just to be safe, please do the following:

1. Stop your Reactor service.
2. Remove the reactor.log file from the logs subdirectory.
3. Restart Reactor.
4. Post the log file.

I want to have a look from the start onward. Thanks!

[wmarcolin]

@toggledbits thank you for all your attention.
I tried to post the log here, but it exceeds the number of characters.
Can you indicate another place to send the file?
Thanks.

[toggledbits]

I'll send you a link via PM.

[toggledbits]

Got it. Looks good. Perfectly clean. There was an incidental issue where the DGC was delaying releasing notifications on a group if the group filtered out all of its entities. You might have noticed different behavior had a door been open at the time Reactor restarted vs what appears to be the more common condition that all were closed (thus empty group displaying the bug). Onward!

[wmarcolin]

@toggledbits