java.lang.RuntimeException: invalid symbol format causing Metals to go silent?

[adamw]

Describe the bug

When working on sttp/circe integration I noticed that Metals stopped being responsive (code navigation stops working quite frequently). The only thing in the log is the following stack trace:

2024.12.11 17:03:24 ERROR searching for `().` failed
java.lang.RuntimeException: invalid symbol format
().
^
	at scala.sys.package$.error(package.scala:27)
	at scala.meta.internal.semanticdb.Scala$DescriptorParser.fail(Scala.scala:164)
	at scala.meta.internal.semanticdb.Scala$DescriptorParser.readChar(Scala.scala:176)
	at scala.meta.internal.semanticdb.Scala$DescriptorParser.parseValue(Scala.scala:192)
	at scala.meta.internal.semanticdb.Scala$DescriptorParser.parseDescriptor(Scala.scala:209)
	at scala.meta.internal.semanticdb.Scala$DescriptorParser.entryPoint(Scala.scala:232)
	at scala.meta.internal.semanticdb.Scala$DescriptorParser$.apply(Scala.scala:240)
	at scala.meta.internal.semanticdb.Scala$ScalaSymbolOps$.owner$extension(Scala.scala:80)
	at scala.meta.internal.mtags.Symbol.toplevel(Symbol.scala:50)
	at scala.meta.internal.mtags.SymbolIndexBucket.query0(SymbolIndexBucket.scala:200)
	at scala.meta.internal.mtags.SymbolIndexBucket.query(SymbolIndexBucket.scala:177)
	at scala.meta.internal.mtags.OnDemandSymbolIndex.$anonfun$findSymbolDefinition$1(OnDemandSymbolIndex.scala:142)
	at scala.collection.immutable.List.flatMap(List.scala:294)
	at scala.meta.internal.mtags.OnDemandSymbolIndex.findSymbolDefinition(OnDemandSymbolIndex.scala:142)
	at scala.meta.internal.mtags.OnDemandSymbolIndex.definition(OnDemandSymbolIndex.scala:48)
	at scala.meta.internal.metals.FallbackDefinitionProvider.findInIndex$1(FallbackDefinitionProvider.scala:125)
	at scala.meta.internal.metals.FallbackDefinitionProvider.$anonfun$search$15(FallbackDefinitionProvider.scala:132)
	at scala.collection.immutable.List.flatMap(List.scala:294)
	at scala.meta.internal.metals.FallbackDefinitionProvider.$anonfun$search$3(FallbackDefinitionProvider.scala:131)
	at scala.Option.map(Option.scala:242)
	at scala.meta.internal.metals.FallbackDefinitionProvider.$anonfun$search$2(FallbackDefinitionProvider.scala:43)
	at scala.Option.flatMap(Option.scala:283)
	at scala.meta.internal.metals.FallbackDefinitionProvider.$anonfun$search$1(FallbackDefinitionProvider.scala:40)
	at scala.Option.flatMap(Option.scala:283)
	at scala.meta.internal.metals.FallbackDefinitionProvider.search(FallbackDefinitionProvider.scala:39)
	at scala.meta.internal.metals.DefinitionProvider.$anonfun$definition$3(DefinitionProvider.scala:120)
	at scala.Option.orElse(Option.scala:477)
	at scala.meta.internal.metals.DefinitionProvider.$anonfun$definition$2(DefinitionProvider.scala:120)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.lang.Thread.run(Thread.java:1583)

Expected behavior

No response

Operating system

macOS

Editor/Extension

VS Code

Version of Metals

v1.4.1

Extra context or search terms

No response