The design sources fileset name is by default "sources_1".
```
scripts.push(`set_property SOURCE_SET sources_1 [get_filesets sim_1]`);
```
This line of code will cause Vivado ouput this message:
```
CRITICAL WARNING: [filemgmt 20-599] Failed to locate the reference fileset 'source_1' referred to by the simulation fileset 'sim_1'!
```
The commit may fix that.