toolbox_server_error_telemetry_151_27_04_2026.md

DevTools Toolbox Error Analysis - Server Protocol Errors

Period: 2026-04-23 01:01 to 2026-04-26 15:42 Total Errors: 35

Overview

The analysis reveals 35 server protocol errors, with the most common error type being 'undefined' (37.1%). 82.9% occur on aurora. Windows users account for 68.6% of all errors.

Platform Distribution

• Windows: 24 errors (68.6%)
• Linux: 8 errors (22.9%)
• Darwin: 3 errors (8.6%)

Channel Distribution

• aurora: 29 errors (82.9%)
• beta: 6 errors (17.1%)

Error Breakdown by Category

1. TypeError: (undefined) - 12 errors (34.3%)

Error location:

set@resource://devtools/client/shared/WeakMapMap.js:73:18

Affected:

• Channels: aurora (12)
• Platforms: Windows (10), Darwin (2)
• Targets: undefined (12)

2. out of memory: Error: (watchTargets) - 10 errors (28.6%)

Error location:

onPacket/<@resource://devtools/shared/protocol/Front.js:404:31

Affected:

• Channels: aurora (9), beta (1)
• Platforms: Windows (9), Linux (1)
• Targets: server0.conn0.watcher3 (5), server0.conn3.watcher3 (2), server0.conn4.watcher3 (1)

3. SecurityError: Error: (watchResources) - 6 errors (17.1%)

Error location:

onWindowReady@resource://devtools/server/actors/webconsole/listeners/document-events.js:113:9

Affected:

• Channels: aurora (6)
• Platforms: Windows (3), Linux (2), Darwin (1)
• Targets: server0.conn0.watcher3 (4), server0.conn1.watcher3 (2)

4. wrongState: Error: (getTarget) - 3 errors (8.6%)

Error location:

onPacket/<@resource://devtools/shared/protocol/Front.js:404:31

Affected:

• Channels: beta (3)
• Platforms: Linux (3)
• Targets: server0.conn0.workerDescriptor54 (1), server0.conn0.workerDescriptor8 (1), server0.conn1.content-process13/workerDescriptor5 (1)

5. unrecognizedPacketType: Error: (getTargetConfigurationActor) - 2 errors (5.7%)

Error location:

onPacket/<@resource://devtools/shared/protocol/Front.js:404:31

Affected:

• Channels: beta (2)
• Platforms: Linux (2)
• Targets: server0.conn0.watcher32 (1), server0.conn0.watcher38 (1)

6. TypeError: Error: (watchResources) - 1 errors (2.9%)

Error location:

listen@resource://devtools/server/actors/webconsole/listeners/document-events.js:68:1

Affected:

• Channels: aurora (1)
• Platforms: Windows (1)
• Targets: server0.conn1.watcher3 (1)

7. Error: (undefined) - 1 errors (2.9%)

Error location:

baseFrontClassDestroy@resource://devtools/shared/protocol/Front.js:105:23

Affected:

• Channels: aurora (1)
• Platforms: Windows (1)
• Targets: undefined (1)

Top Error Types Summary

1. undefined: set - 12 occurrences (34.3%)
2. out of memory: onPacket/< - 10 occurrences (28.6%)
3. SecurityError: onWindowReady - 6 occurrences (17.1%)
4. wrongState: onPacket/< - 3 occurrences (8.6%)
5. unrecognizedPacketType: onPacket/< - 2 occurrences (5.7%)
6. TypeError: listen - 1 occurrences (2.9%)
7. undefined: baseFrontClassDestroy - 1 occurrences (2.9%)

Actionable Insights

• 1. undefined: set accounts for 34.3% of all errors (12 occurrences)
• 2. aurora channel dominance: 82.9% of errors are from aurora
• 3. Platform-specific: undefined: set is predominantly on Windows (10/12 errors)

Recommendations

Priority 1: undefined: set

• File location: devtools/client/shared/WeakMapMap.js:73:18
• Impact: 34.3% of all errors

Priority 2: out of memory: onPacket/<

• File location: devtools/shared/protocol/Front.js:404:31
• Impact: 28.6% of all errors

Priority 3: SecurityError: onWindowReady

• File location: devtools/server/actors/webconsole/listeners/document-events.js:113:9
• Impact: 17.1% of all errors

Priority 4: wrongState: onPacket/<

• File location: devtools/shared/protocol/Front.js:404:31
• Impact: 8.6% of all errors

Priority 5: unrecognizedPacketType: onPacket/<

• File location: devtools/shared/protocol/Front.js:404:31
• Impact: 5.7% of all errors

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DevTools Toolbox Server Protocol Errors (7-day analysis)

35 errors recorded from 2026-04-23 01:01 to 2026-04-26 15:42. Top issues: undefined: set (12 errors), out of memory: onPacket/< (10 errors), SecurityError: onWindowReady (6 errors). aurora channel represents 82.9% of errors. Windows accounts for 68.6% of errors.