CSHARP x Troubleshooting Matrix

Matrix includes 148 runtime-specific guides grouped by user intent and fix patterns.

Guides in matrix: 148 | Sample shown: 40
#GuideInternal LinksIntent
1System.Text.Json.JsonException: 'N' is an invalid start of a value. LineNumber: 0 | BytePositionInLine: 0.: what it means and how to fix it56troubleshooting
2Error converting value "123.45" to type 'System.Double'. Path 'items[0].id', line 1, position 10.: what it means and how to fix it47troubleshooting
3Error converting value "123.45" to type 'System.Double'. Path 'user.id', line 1, position 10.: what it means and how to fix it46troubleshooting
4System.Text.Json.JsonException: 'I' is an invalid start of a value. LineNumber: 0 | BytePositionInLine: 0.: what it means and how to fix it38troubleshooting
5System.Text.Json.JsonException: ',' is an invalid start of a value. LineNumber: 0 | BytePositionInLine: 0.: what it means and how to fix it37troubleshooting
6Error converting value "123.45" to type 'System.Decimal'. Path 'items[0].id', line 1, position 10.: what it means and how to fix it37troubleshooting
7Error converting value "123.45" to type 'System.DateTime'. Path 'items[0].id', line 1, position 10.: what it means and how to fix it35troubleshooting
8System.Text.Json.JsonException: 'u' is an invalid start of a value. LineNumber: 0 | BytePositionInLine: 0.: what it means and how to fix it35troubleshooting
9Error converting value "123.45" to type 'System.Decimal'. Path 'user.id', line 1, position 10.: what it means and how to fix it34troubleshooting
10Error converting value "123.45" to type 'System.Double'. Path 'value', line 1, position 10.: what it means and how to fix it31troubleshooting
11System.Xml.XmlException: Unexpected end of file has occurred.: what it means and how to fix it31troubleshooting
12System.Xml.XmlException: Data at the root level is invalid. Line 1, position 1.: what it means and how to fix it30troubleshooting
13Error converting value "123.45" to type 'System.Boolean'. Path 'items[0].id', line 1, position 10.: what it means and how to fix it29troubleshooting
14Error converting value "123.45" to type 'System.DateTime'. Path 'user.id', line 1, position 10.: what it means and how to fix it29troubleshooting
15System.Text.Json.JsonException: 'o' is an invalid start of a value. LineNumber: 0 | BytePositionInLine: 0.: what it means and how to fix it29troubleshooting
16Error converting value "123.45" to type 'System.Decimal'. Path 'value', line 1, position 10.: what it means and how to fix it27troubleshooting
17Error converting value "123.45" to type 'System.Guid'. Path 'id', line 1, position 10.: what it means and how to fix it27troubleshooting
18Error converting value "Infinity" to type 'System.Int32'. Path 'items[0].id', line 1, position 10.: what it means and how to fix it26troubleshooting
19Error converting value "Infinity" to type 'System.Int64'. Path 'items[0].id', line 1, position 10.: what it means and how to fix it26troubleshooting
20Error converting value "Infinity" to type 'System.Uri'. Path 'items[0].id', line 1, position 10.: what it means and how to fix it26troubleshooting
21System.Text.Json.JsonException: '<' is an invalid start of a value. LineNumber: 0 | BytePositionInLine: 0.: what it means and how to fix it25troubleshooting
22Error converting value "Infinity" to type 'System.Guid'. Path 'items[0].id', line 1, position 10.: what it means and how to fix it24troubleshooting
23Error converting value "2026-02-17" to type 'System.DateTime'. Path 'items[0].id', line 1, position 10.: what it means and how to fix it24troubleshooting
24Error converting value "2026-02-17" to type 'System.DateTime'. Path 'user.id', line 1, position 10.: what it means and how to fix it23troubleshooting
25Error converting value "2026-02-17" to type 'System.Decimal'. Path 'id', line 1, position 10.: what it means and how to fix it23troubleshooting
26Error converting value "123.45" to type 'System.DateTime'. Path 'value', line 1, position 10.: what it means and how to fix it22troubleshooting
27Error converting value "Infinity" to type 'System.Double'. Path 'items[0].id', line 1, position 10.: what it means and how to fix it21troubleshooting
28Invalid JSON primitive: ...: how to fix it (Newtonsoft.Json)20troubleshooting
29System.Xml.XmlException: An error occurred while parsing EntityName.: what it means and how to fix it20troubleshooting
30Error converting value "2026-02-17" to type 'System.Boolean'. Path 'items[0].id', line 1, position 10.: what it means and how to fix it19troubleshooting
31Error converting value "123.45" to type 'System.Boolean'. Path 'user.id', line 1, position 10.: what it means and how to fix it18troubleshooting
32Error converting value "2026-02-17" to type 'System.Boolean'. Path 'user.id', line 1, position 10.: what it means and how to fix it18troubleshooting
33Error converting value "123.45" to type 'System.Uri'. Path 'items[0].id', line 1, position 10.: what it means and how to fix it17troubleshooting
34System.Xml.XmlException: The reference to entity must end with the ';' delimiter.: what it means and how to fix it17troubleshooting
35System.Text.Json.JsonException: '\\' is an invalid start of a value. LineNumber: 0 | BytePositionInLine: 0.: what it means and how to fix it17troubleshooting
36System.Text.Json.JsonException: 'ï' is an invalid start of a value. LineNumber: 0 | BytePositionInLine: 0.: what it means and how to fix it17troubleshooting
37Error converting value "123.45" to type 'System.Uri'. Path 'user.id', line 1, position 10.: what it means and how to fix it17troubleshooting
38Error converting value "123.45" to type 'System.Collections.Generic.List`1[System.Int32]'. Path 'value', line 1, position 10.: what it means and how to fix it17troubleshooting
39Error converting value "123" to type 'System.Collections.Generic.List`1[System.Int32]'. Path 'id', line 1, position 10.: what it means and how to fix it16troubleshooting
40Error converting value "123.45" to type 'System.Double'. Path 'id', line 1, position 10.: what it means and how to fix it16troubleshooting