pls help, says "File not found." on compile[solved]

i'm new to mapping and i've not had this problem before but the one at the bottom seems to break it
** Executing...
** Command: "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\bin\vbsp.exe"
** Parameters: -game "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\tf" "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\sourcesdk_content\tf\mapsrc\ctf_corridor_o10.vmf"

Valve Software - vbsp.exe (Mar 6 2018)
4 threads
materialPath: C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\tf\materials
Loading C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\sourcesdk_content\tf\mapsrc\ctf_corridor_o10.vmf
Patching WVT material: maps/ctf_corridor_o10/brick/blendcobbletocobblesnow001_wvt_patch
fixing up env_cubemap materials on brush sides...
ProcessBlock_Thread: 0...1...2...3...4...5...6...7...8...9...10 (0)
ProcessBlock_Thread: 0...1...2...3...4...5...6...7...8...9...10 (0)
Processing areas...done (0)
Building Faces...done (0)
Chop Details...done (0)
Find Visible Detail Sides...done (0)
Merging details...done (0)
FixTjuncs...
PruneNodes...
WriteBSP...
done (0)
writing C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\sourcesdk_content\tf\mapsrc\ctf_corridor_o10.prt...Building visibility clusters...
done (0)
*** Error: Skybox vtf files for skybox/sky_tf2_04 weren't compiled with the same size texture and/or same flags!
Can't load skybox file skybox/sky_tf2_04 to build the default cubemap!
*** Error: Skybox vtf files for skybox/sky_tf2_04 weren't compiled with the same size texture and/or same flags!
Can't load skybox file skybox/sky_tf2_04 to build the default cubemap!
Finding displacement neighbors...
Finding lightmap sample positions...
Displacement Alpha : 0...1...2...3...4...5...6...7...8...9...10
Overlay touching too many faces (touching 81, max 64)
Overlay overlays/patch005 at 628.0 -196.0 0.0

** Executing...
** Command: "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\bin\vvis.exe"
** Parameters: -game "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\tf" "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\sourcesdk_content\tf\mapsrc\ctf_corridor_o10"

Valve Software - vvis.exe (Mar 6 2018)
4 threads
reading c:\program files (x86)\steam\steamapps\common\team fortress 2\sourcesdk_content\tf\mapsrc\ctf_corridor_o10.bsp
Error opening c:\program files (x86)\steam\steamapps\common\team fortress 2\sourcesdk_content\tf\mapsrc\ctf_corridor_o10.bsp

** Executing...
** Command: "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\bin\vrad.exe"
** Parameters: -game "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\tf" "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\sourcesdk_content\tf\mapsrc\ctf_corridor_o10"

Valve Software - vrad.exe SSE (Mar 6 2018)

Valve Radiosity Simulator
4 threads
[Reading texlights from 'lights.rad']
unknown light specifier type - lights
[56 texlights parsed from 'lights.rad']

Loading c:\program files (x86)\steam\steamapps\common\team fortress 2\sourcesdk_content\tf\mapsrc\ctf_corridor_o10.bsp
Error opening c:\program files (x86)\steam\steamapps\common\team fortress 2\sourcesdk_content\tf\mapsrc\ctf_corridor_o10.bsp

** Executing...
** Command: Copy File
** Parameters: "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\sourcesdk_content\tf\mapsrc\ctf_corridor_o10.bsp" "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2\tf\maps\ctf_corridor_o10.bsp"

The command failed. Windows reported the error:
"File not found."

thx