Error: Target not created and Debug.

i have a error : Build started: Project: led *** Using Compiler 'V5.06 update 6 (build 750)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin' Build target 'Target 1' compiling system_TM4C123.c... C:\Users\Ahmed...
Error: Target not created and Debug.

i have a error : Build started: Project: led *** Using Compiler 'V5.06 update 6 (build 750)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin' Build target 'Target 1' compiling system_TM4C123.c... C:\Users\Ahmed...
target not created error + Debug not responding

Rebuild started: Project: asm4-1 *** Using Compiler 'V6.14', folder: 'C:\Keil_v5\ARM\ARMCLANG\Bin' Rebuild target 'Target 1' "asm4-1.s", line 6: Error: A1167E: Invalid line start 6 00000000 ?? 1 Error...
target not created error + Debug not responding

Rebuild started: Project: asm4-1 *** Using Compiler 'V6.14', folder: 'C:\Keil_v5\ARM\ARMCLANG\Bin' Rebuild target 'Target 1' "asm4-1.s", line 6: Error: A1167E: Invalid line start 6 00000000 ?? 1 Error...
Target not created error in keil

Build target 'Target 1' linking... *** ERROR L104: MULTIPLE PUBLIC DEFINITIONS SYMBOL: DELAY MODULE: .\Objects\p8.obj (P8) *** ERROR L104: MULTIPLE PUBLIC DEFINITIONS SYMBOL: MAIN MODULE: .\Objects...