Many Errors

[NickischLP]

I have these errors and i didnt find a solution.
I need help
L 07/01/2015 - 15:09:34: [SM] Native "SQL_TQuery" reported: Invalid database Handle 0 (error: 4)
L 07/01/2015 - 15:09:34: [SM] Displaying call stack trace for plugin "store/store-backend.smx":
L 07/01/2015 - 15:09:34: [SM] [0] Line 1881, D:\SourcePawn\store\scripting\store-backend.sp::Native_RegisterPluginModule()
L 07/01/2015 - 15:09:34: [SM] Native "Store_RegisterPluginModule" reported: Error encountered while processing a dynamic native
L 07/01/2015 - 15:09:34: [SM] Displaying call stack trace for plugin "store/store-chatcolor.smx":
L 07/01/2015 - 15:09:34: [SM] [0] Line 45, C:\sourcemod-projects\store\store-chatcolor.sp::OnPluginStart()
L 07/01/2015 - 15:09:36: [SM] Native "json_typeof" reported: Invalid <JSON Object> handle 0 (error 4)
L 07/01/2015 - 15:09:36: [SM] Displaying call stack trace for plugin "store/store-equipment.smx":
L 07/01/2015 - 15:09:36: [SM] [0] Line 988, D:\SourcePawn\include\smjansson.inc::json_obj ect_get_float()
L 07/01/2015 - 15:09:36: [SM] [1] Line 342, store-equipment.sp::LoadItem()
L 07/01/2015 - 15:09:36: [SM] Native "json_typeof" reported: Invalid <JSON Object>

[Robin955]

same
L 07/01/2015 - 15:09:34: [SM] Displaying call stack trace for plugin "store/store-backend.smx":
L 07/01/2015 - 15:09:34: [SM] [0] Line 1881, D:\SourcePawn\store\scripting\store-backend.sp::Native_RegisterPluginModule()
L 07/01/2015 - 15:09:34: [SM] Native "Store_RegisterPluginModule" reported: Error encountered while processing a dynamic nativ