public Builder clearScanConfigError() {
      bitField0_ = (bitField0_ & ~0x00000002);
      scanConfigError_ = null;
      if (scanConfigErrorBuilder_ != null) {
        scanConfigErrorBuilder_.dispose();
        scanConfigErrorBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
Output only. If the scan encounters SCAN_CONFIG_ISSUE error, this field has the error
message encountered during scan configuration validation that is performed
before each scan run.
</pre>

<code>.google.cloud.websecurityscanner.v1.ScanConfigError scan_config_error = 2;</code>
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1/src/main/java/com/google/cloud/websecurityscanner/v1/ScanRunErrorTrace.java