Error starting watcher

We upgraded to 8.7.0 yesterday, since then none of our watchers have executed. We just keep getting this message in the elastic logs: error starting watcher

I tried deleting the extra .watcher-history-* indices via updating the ILM like is post recommended: Watcher can fail to restart in early version of 8.x · Issue #85508 · elastic/elasticsearch · GitHub but that did not do anything.

I also tried to put the watcher logs in debug mode with this command:

PUT _cluster/settings
  "persistent": {
    "": "debug"

but our cluster still is not generating any debug logs. What else can I try?

I ended up deleting the .watches and .triggered_watches indices and recreating them and watcher started executing again.

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