Disk full error (gwallet)

[janus]

gwallet stopped working when my disk was full. However, the error persisted[1] after freeing my disk.
It only started working again after I deleted telemetry folder.
Is this the intended behavior?
[1] The error:

$ gwallet

*** STATUS ***
exception inside UnhandledException handler: (null) assembly:/snap/gwallet/27/usr/lib/mono/4.5/mscorlib.dll type:IOException member:(null)

[ERROR] FATAL UNHANDLED EXCEPTION: System.IO.IOException: Disk full. Path /home/ika/snap/gwallet/27/.config/gwallet/cache/telemetry/a1c2aa44971b7186da1d4e1cee2b63a8
  at System.IO.FileStream.Dispose (System.Boolean disposing) [0x000cb] in <533173d24dae460899d2b10975534bb0>:0
  at System.IO.Stream.Close () [0x00000] in <533173d24dae460899d2b10975534bb0>:0
  at System.IO.StreamWriter.Dispose (System.Boolean disposing) [0x0002e] in <533173d24dae460899d2b10975534bb0>:0
  at System.IO.TextWriter.Dispose () [0x00000] in <533173d24dae460899d2b10975534bb0>:0
  at System.IO.File.WriteAllText (System.String path, System.String contents) [0x00039] in <533173d24dae460899d2b10975534bb0>:0
  at GWallet.Backend.Infrastructure.LogCrash (System.Exception ex, System.Boolean meta) [0x0002b] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at GWallet.Backend.Infrastructure.LogOrReportCrash (System.Exception ex) [0x00000] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at Program.NormalStartWithNoParameters () [0x00017] in <60a5ea82706f857da745038382eaa560>:0
  at Program.main (System.String[] argv) [0x00044] in <60a5ea82706f857da745038382eaa560>:0
ika@ika-Lenovo-G40-30:~/buildtool/job/amhello/gitcoin/fn/bitcoin$ gwallet

Unhandled Exception:
System.ArgumentException: empty or whitespace json
Parameter name: json
  at GWallet.Backend.Marshalling.DeserializeCustom[T] (System.String json, Newtonsoft.Json.JsonSerializerSettings settings) [0x0001d] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at GWallet.Backend.Marshalling.Deserialize[T] (System.String json) [0x00023] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at GWallet.Backend.Infrastructure.ReportAllPastExceptions () [0x0002f] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at GWallet.Backend.Infrastructure.SetupExceptionHook () [0x00000] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at Program.NormalStartWithNoParameters () [0x00000] in <60a5ea82706f857da745038382eaa560>:0
  at Program.main (System.String[] argv) [0x00044] in <60a5ea82706f857da745038382eaa560>:0
[ERROR] FATAL UNHANDLED EXCEPTION: System.ArgumentException: empty or whitespace json
Parameter name: json
  at GWallet.Backend.Marshalling.DeserializeCustom[T] (System.String json, Newtonsoft.Json.JsonSerializerSettings settings) [0x0001d] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at GWallet.Backend.Marshalling.Deserialize[T] (System.String json) [0x00023] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at GWallet.Backend.Infrastructure.ReportAllPastExceptions () [0x0002f] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at GWallet.Backend.Infrastructure.SetupExceptionHook () [0x00000] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at Program.NormalStartWithNoParameters () [0x00000] in <60a5ea82706f857da745038382eaa560>:0
  at Program.main (System.String[] argv) [0x00044] in <60a5ea82706f857da745038382eaa560>:0
ika@ika-Lenovo-G40-30:~/buildtool/job/amhello/gitcoin/fn/bitcoin$ gwallet

Unhandled Exception:
System.ArgumentException: empty or whitespace json
Parameter name: json
  at GWallet.Backend.Marshalling.DeserializeCustom[T] (System.String json, Newtonsoft.Json.JsonSerializerSettings settings) [0x0001d] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at GWallet.Backend.Marshalling.Deserialize[T] (System.String json) [0x00023] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at GWallet.Backend.Infrastructure.ReportAllPastExceptions () [0x0002f] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at GWallet.Backend.Infrastructure.SetupExceptionHook () [0x00000] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at Program.NormalStartWithNoParameters () [0x00000] in <60a5ea82706f857da745038382eaa560>:0
  at Program.main (System.String[] argv) [0x00044] in <60a5ea82706f857da745038382eaa560>:0
[ERROR] FATAL UNHANDLED EXCEPTION: System.ArgumentException: empty or whitespace json
Parameter name: json
  at GWallet.Backend.Marshalling.DeserializeCustom[T] (System.String json, Newtonsoft.Json.JsonSerializerSettings settings) [0x0001d] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at GWallet.Backend.Marshalling.Deserialize[T] (System.String json) [0x00023] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at GWallet.Backend.Infrastructure.ReportAllPastExceptions () [0x0002f] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at GWallet.Backend.Infrastructure.SetupExceptionHook () [0x00000] in <60a5ea7c5e45f38ba74503837ceaa560>:0
  at Program.NormalStartWithNoParameters () [0x00000] in <60a5ea82706f857da745038382eaa560>:0
  at Program.main (System.String[] argv) [0x00044] in <60a5ea82706f857da745038382eaa560>:0