* [NSString stringWithCString:encoding:]: NULL cString
(null)
((

0   CoreFoundation                      0x0000000187a491d0 <redacted> + 148
1   libobjc.A.dylib                     0x000000018648055c objc_exception_throw + 56
2   CoreFoundation                      0x0000000187a49100 <redacted> + 0
3   Foundation                          0x000000018847cd80 <redacted> + 100
4   AppName                             0x10090d3d0 AppName + 9491408
query_callback (in AppName) + 192
5   libsqlite3.dylib                    0x0000000187f3d628 sqlite3_exec + 800
6   AppName                             0x10090a438 AppName + 9479224
execute_query (in AppName) + 164
7   AppName                             0x10090bdb0 AppName + 9485744
-[WXOMTAStore loadCachedEvents:] (in AppName) + 184
8   AppName                             0x10090cccc AppName + 9489612
__32-[WXOMTAStore sendCachedEvents:]_block_invoke (in AppName) + 440
9   libdispatch.dylib                   0x00000001868d21fc <redacted> + 24
10  libdispatch.dylib                   0x00000001868d21bc <redacted> + 16
11  libdispatch.dylib                   0x00000001868e03dc <redacted> + 928
12  libdispatch.dylib                   0x00000001868d59a4 <redacted> + 652
13  libdispatch.dylib                   0x00000001868e234c <redacted> + 572
14  libdispatch.dylib                   0x00000001868e20ac <redacted> + 124
15  libsystem_pthread.dylib             0x0000000186adb2a0 _pthread_wqthread + 1288
16  libsystem_pthread.dylib             0x0000000186adad8c start_wqthread + 4

)

Lines 7 and 8 are the main error messages