[Android Software Development] Just Passing By:
Can someone help me understand why I can't properly build the Google Camera port?

I: Using Apktool 2.3.0
I: Checking whether sources has changed...
I: Smaling smali folder into classes.dex...
I: Checking whether resources has changed...
I: Building resources...
W: /home/omitted/Downloads/Google/GoogleCamera/res/values-v26/mipmaps.xml:4: error: Resource entry adaptiveproduct_pixelcamera_launcher is already defined.
W: res/mipmap-v26/adaptiveproduct_pixelcamera_launcher.xml:0: Originally defined here.
W:
Exception in thread "main" brut.androlib.AndrolibException: brut.androlib.AndrolibException: brut.common.BrutException: could not exec (exit code = 1): [/tmp/brut_util_Jar_3856618453268367846.tmp, p, --forced-package-id, 127, --min-sdk-version, 23, --target-sdk-version, 26, --version-code, 41174009, --version-name, 4.4.020.163412804, --no-version-vectors, -F, /tmp/APKTOOL8438205811648231217.tmp, -0, arsc, -0, apk, -0, assets/com.google.android.vision.face/models/classification/frontal_face_classifiers.4/is_left_eye_open-y0.12-wmd.bin, -0, assets/com.google.android.vision.face/models/classification/frontal_face_classifiers.4/is_right_eye_open-y0.12-wmd.bin, -0, assets/com.google.android.vision.face/models/classification/frontal_face_classifiers.4/is_smiling-y0.5-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/bottom_mouth-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/landmark_group_meta_data.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/left_cheek-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/left_eye-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/left_mouth-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/nose_base-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/right_cheek-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/right_eye-y0-yi45-p0-pi45-r0-ri20.lg_32-3-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/right_mouth-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/head-y0-yi45-p0-pi45-r0-ri30.4a-v24-tree7-2-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/head-y0-yi45-p0-pi45-rn30-ri30.5-v24-tree7-2-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/head-y0-yi45-p0-pi45-rp30-ri30.5-v24-tree7-2-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/pose-r.8.1.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/pose-y-r.8.1.bin, -0, bin, -0, arsc, -I, /home/omitted/.local/share/apktool/framework/1.apk, -S, /home/omitted/Downloads/Google/GoogleCamera/res, -M, /home/omitted/Downloads/Google/GoogleCamera/AndroidManifest.xml]
at brut.androlib.Androlib.buildResourcesFull(Androlib.java:485)
at brut.androlib.Androlib.buildResources(Androlib.java:419)
at brut.androlib.Androlib.build(Androlib.java:318)
at brut.androlib.Androlib.build(Androlib.java:270)
at brut.apktool.Main.cmdBuild(Main.java:224)
at brut.apktool.Main.main(Main.java:75)
Caused by: brut.androlib.AndrolibException: brut.common.BrutException: could not exec (exit code = 1): [/tmp/brut_util_Jar_3856618453268367846.tmp, p, --forced-package-id, 127, --min-sdk-version, 23, --target-sdk-version, 26, --version-code, 41174009, --version-name, 4.4.020.163412804, --no-version-vectors, -F, /tmp/APKTOOL8438205811648231217.tmp, -0, arsc, -0, apk, -0, assets/com.google.android.vision.face/models/classification/frontal_face_classifiers.4/is_left_eye_open-y0.12-wmd.bin, -0, assets/com.google.android.vision.face/models/classification/frontal_face_classifiers.4/is_right_eye_open-y0.12-wmd.bin, -0, assets/com.google.android.vision.face/models/classification/frontal_face_classifiers.4/is_smiling-y0.5-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/bottom_mouth-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/landmark_group_meta_data.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/left_cheek-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/left_eye-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/left_mouth-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/nose_base-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/right_cheek-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/right_eye-y0-yi45-p0-pi45-r0-ri20.lg_32-3-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/right_mouth-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/head-y0-yi45-p0-pi45-r0-ri30.4a-v24-tree7-2-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/head-y0-yi45-p0-pi45-rn30-ri30.5-v24-tree7-2-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/head-y0-yi45-p0-pi45-rp30-ri30.5-v24-tree7-2-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/pose-r.8.1.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/pose-y-r.8.1.bin, -0, bin, -0, arsc, -I, /home/omitted/.local/share/apktool/framework/1.apk, -S, /home/omitted/Downloads/Google/GoogleCamera/res, -M, /home/omitted/Downloads/Google/GoogleCamera/AndroidManifest.xml]
at brut.androlib.res.AndrolibResources.aaptPackage(AndrolibResources.java:454)
at brut.androlib.Androlib.buildResourcesFull(Androlib.java:471)
... 5 more
Caused by: brut.common.BrutException: could not exec (exit code = 1): [/tmp/brut_util_Jar_3856618453268367846.tmp, p, --forced-package-id, 127, --min-sdk-version, 23, --target-sdk-version, 26, --version-code, 41174009, --version-name, 4.4.020.163412804, --no-version-vectors, -F, /tmp/APKTOOL8438205811648231217.tmp, -0, arsc, -0, apk, -0, assets/com.google.android.vision.face/models/classification/frontal_face_classifiers.4/is_left_eye_open-y0.12-wmd.bin, -0, assets/com.google.android.vision.face/models/classification/frontal_face_classifiers.4/is_right_eye_open-y0.12-wmd.bin, -0, assets/com.google.android.vision.face/models/classification/frontal_face_classifiers.4/is_smiling-y0.5-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/bottom_mouth-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/landmark_group_meta_data.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/left_cheek-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/left_eye-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/left_mouth-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/nose_base-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/right_cheek-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/right_eye-y0-yi45-p0-pi45-r0-ri20.lg_32-3-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/multi_pose_face_landmark_detectors.8/right_mouth-y0-yi45-p0-pi45-r0-ri20.lg_32-tree7-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/head-y0-yi45-p0-pi45-r0-ri30.4a-v24-tree7-2-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/head-y0-yi45-p0-pi45-rn30-ri30.5-v24-tree7-2-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/head-y0-yi45-p0-pi45-rp30-ri30.5-v24-tree7-2-wmd.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/pose-r.8.1.bin, -0, assets/com.google.android.vision.face/models/detection/yaw_roll_face_detectors.7.1/pose-y-r.8.1.bin, -0, bin, -0, arsc, -I, /home/omitted/.local/share/apktool/framework/1.apk, -S, /home/omitted/Downloads/Google/GoogleCamera/res, -M, /home/omitted/Downloads/Google/GoogleCamera/AndroidManifest.xml]
at brut.util.OS.exec(OS.java:95)
at brut.androlib.res.AndrolibResources.aaptPackage(AndrolibResources.java:448)
... 6 more