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<https://github.com/The-OpenROAD-Project/OpenLane/issues/772|#772 OpenLane "child process exited abnormally">
New issue created by <https://github.com/jaquerinte|jaquerinte>
*Description*

When I launch my project, OpenLane crash with the error "child process exited abnormally".  
Note that in my config.tlc. The CLOCK_PORT and CLOCK_NET is the same port, because, yosys simplifies the net.

*Environment*

```
0 1
2 3
Python: v3.8.10
Kernel: Linux v5.11.0-43-generic
Distribution: ubuntu 20.04
Container Engine: docker v20.10.11
OpenLane Git Version: 2021.10.25_20.35.00
---
PDK Version Verification Status: OK

---
Git Log (Last 5 Commits)

commit e8f4a88f668b366f126bba40861153bf478a33c1
Author: Donn &lt;me@donn.website&gt;
Date:   Mon Oct 25 20:32:41 2021 +0200

    Last Minute Fixes for MPW3 (#675)


```

*Reproduction Material*

• <https://github.com/jaquerinte/space_controller/tree/4de4e18cf8117fdb59c9daad2f8f1f983a1ef04c|https://github.com/jaquerinte/space_controller/tree/4de4e18cf8117fdb59c9daad2f8f1f983a1ef04c>
• command:  
    make user_proj_example

*Expected behavior*

Openlane finish the hardening.

*Logs*

```
[INFO GRT-0101] Running extra iterations to remove overflow.
[INFO GRT-0103] Extra Run for hard benchmark.
[ERROR GRT-0169] Invalid index for position (86, 81).
Error: or_resizer_routing_timing.tcl, 41 GRT-0169
[ERROR]: during executing: "openroad -exit /openlane/scripts/openroad/or_resizer_routing_timing.tcl |&amp; tee &gt;&amp;@stdout /project/openlane/user_proj_example/runs/user_proj_example/logs/routing/15-resizer_timing_optimization.log"
[ERROR]: Exit code: 1
[ERROR]: Last 10 lines:
child process exited abnormally

[ERROR]: Please check openroad  log file
[ERROR]: Dumping to /project/openlane/user_proj_example/runs/user_proj_example/error.log

```
<https://github.com/The-OpenROAD-Project/OpenLane|The-OpenROAD-Project/OpenLane>