error message: all 5 sec

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Hello,

since some days, i suddenly got these error messages - without a system change:

error [pimatic]: An uncaught exception occurred: Error: expected param: valueOrExpression
    at callActionFromSocket (/home/pi/pimatic-app/node_modules/pimatic/node_modules/decl-api/index.js:291:15)
    at callActionFromSocketAndRespond (/home/pi/pimatic-app/node_modules/pimatic/node_modules/decl-api/index.js:395:16)
    at /home/pi/pimatic-app/node_modules/pimatic/node_modules/decl-api/index.js:478:22
    at Socket.<anonymous> (/home/pi/pimatic-app/node_modules/pimatic/node_modules/decl-api/index.js:484:11)
    at emitOne (events.js:77:13)
    at Socket.emit (events.js:169:7)
    at /home/pi/pimatic-app/node_modules/pimatic/node_modules/socket.io/lib/socket.js:503:12
    at nextTickCallbackWith0Args (node.js:489:9)
    at process._tickCallback (node.js:418:13)
 This is most probably a bug in pimatic or in a module, please report it!

Can someone tell me how to fix this?

Thank you!

@revo is that the only debug info?
First time i have seen this error.
Check your rules and variables if these are okay. Maybe even renew the sqlite3 database, you can search the forum for it.

@gleno0h
First of all thank you for the answer.
Regarding the database, I tried the following:
sqlite3 pimatic-database.sqlite ".dump" | sqlite3 pimatic-database-new.sqlite
cp pimatic-database-new.sqlite pimatic-database.sqlite
but nothing has changed.

For the rules I need more time - but I let know about it.
Thanx

@gleno0h
So, the error messages start when I turn off my second Raspberry with Volumio. So my mistake - sorry.
With Node-Red I query the states of the Volumio and write Pimatic variables. What Node-Red tries to transfer when Volumio is off - I don’t know yet. But that’s where the error lies!
Sorry again!