Can anyone help with this? I don't often look at the scanner log, but I think this is a relatively new problem. This is LMS v8.2.1 running on TrueNAS v13 in a jail using FreeBSD v12.2. The Spotty version is 4.8.3, and the Spotty Helper Application for FreeBSD 11 is v0.35.0.

From my LMS scanner log:
[22-08-10 10:48:44.4426] Slim::Music::Import::runImporter (578) Starting Plugins::Spotty::Importer scan
[22-08-10 10:48:44.4679] Plugins::Spotty::Helper::get (51) Didn't find Spotty helper application!
[22-08-10 10:48:44.4725] Plugins::Spotty::API::Token::_gotTokenInfo (153) Failed to get Spotify access token: malformed JSON string, neither tag, array, object, number, string or atom, at character offset 0 (before "sh: : Permission den...") at /usr/local/share/logitechmediaserver/Cache/InstalledPlugins/Plugins/Spotty/API/ line 150.
sh: : Permission denied
[22-08-10 10:48:44.4727] main::main (338) Error: Failed when running main scan: [Can't use string ("sh: : Permission denied
") as a HASH ref while "strict refs" in use at /usr/local/share/logitechmediaserver/Cache/InstalledPlugins/Plugins/Spotty/API/ line 168.]
[22-08-10 10:48:44.4728] main::main (339) Error: Skipping post-process & Not updating lastRescanTime!

Otherwise Spotify seems to be working fine on my Squeezeboxes. I don't know enough to have moved Spotty Helper to a non-standard location.