#112809

SyntaxError: Invalid JSON from Internal Server Error in frontend-web

Error

Events

Users2

Error Frequency

Event

Occurrence First Recent Recommended

JSON

Markdown

{"attachments":null,"browser":null,"device":null,"endpoint_hash":null,"environment":null,"error_type":"SyntaxError","geo_city":null,"geo_country":null,"geo_region":null,"handled":null,"hash":"6a199c55","is_framework":false,"level":"error","mechanism":"span_status","message":"Unexpected token 'I', \"Internal S\"... is not valid JSON","os":null,"parent_hash":"626b83cf","parent_span_id":"0b8de9082104f0e9","project_id":"00000000-0000-0000-0000-000000000000","release":null,"request_headers":null,"request_method":null,"request_path":null,"root_error_message":"Unexpected token 'I', \"Internal S\"... is not valid JSON","root_error_type":"SyntaxError","runtime":null,"service_name":"frontend-web","session_id":null,"shape_hash":"d715e7a4","span_id":"bafa4af0bea57525","stack_trace":"SyntaxError: Unexpected token 'I', \"Internal S\"... is not valid JSON\n    at JSON.parse (<anonymous>)\n    at f (http://frontend-proxy:8080/_next/static/chunks/0zzy1y99582vs.js:1:70798)","technology":null,"tenant_name":null,"thread_id":null,"thread_name":null,"trace_id":"98d66cd5b53e04d93880bae022b5c194","url_full":null,"url_query":null,"user_agent":null,"user_email":null,"user_id":"0fd8ab0d-b98b-4521-8061-9827908130da","user_ip":null,"user_name":null,"when":"2026-10-14T18:47:48.153Z"}

## SyntaxError: Invalid JSON from Internal Server Error in frontend-web

- Type: runtime_exception
- Severity: critical
- Service: frontend-web

```
SyntaxError: Unexpected token 'I', "Internal S"... is not valid JSON
SyntaxError: Unexpected token 'I', "Internal S"... is not valid JSON
    at JSON.parse (<anonymous>)
    at f (http://frontend-proxy:8080/_next/static/chunks/0zzy1y99582vs.js:1:70798)
```

Jump to:Highlights Contexts Stack trace Tags Event grouping Trace Logs All events Session replay

Highlights

level: error
trace.id: 98d66cd5b53e04d93880bae022b5c194

Contexts

User

id: 0fd8ab0d-b98b-4521-8061-9827908130da

Runtime

service: frontend-web
mechanism: span_status

Trace

trace.id: 98d66cd5b53e04d93880bae022b5c194
span.id: bafa4af0bea57525
parent_span.id: 0b8de9082104f0e9

Stack trace

Error message

Unexpected token 'I', "Internal S"... is not valid JSON

SyntaxError: Unexpected token 'I', "Internal S"... is not valid JSONin S"...in app

No source linked for this file.

at JSON.parse (<anonymous>)in JSON.parsein app

No source linked for this file.

at f (http://frontend-proxy:8080/_next/static/chunks/0zzy1y99582vs.js:1:70798):1in app

Loading source…

Raw

SyntaxError: Unexpected token 'I', "Internal S"... is not valid JSON
    at JSON.parse (<anonymous>)
    at f (http://frontend-proxy:8080/_next/static/chunks/0zzy1y99582vs.js:1:70798)

Event grouping

Events join this issue when their fingerprint matches: the error type, the message with volatile parts (ids, numbers, hex) replaced, the service, the span name, and the in-app frames.

Error Frequency

Highlights

Contexts

User

Runtime

Trace

Stack trace

Tags

service

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Session replay

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