Not able to run

[Appstute-Prerna]

e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:16:33 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:19:38 Unresolved reference: BaseActivity
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:29:22 Unresolved reference: BaseActivity
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:29:38 Unresolved reference: IScanView
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:33:5 'provideContentViewId' overrides nothing
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:35:5 'initPresenter' overrides nothing
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:36:29 Unresolved reference: intent
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:36:51 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:37:36 Type mismatch: inferred type is ScanActivity but Context was expected
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:40:5 'prepare' overrides nothing
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:42:19 Unresolved reference: TAG
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:43:13 Unresolved reference: finish
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:49:9 Unresolved reference: findViewById
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:56:9 Unresolved reference: findViewById
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:56:40 Variable expected
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:57:125 Unresolved reference: baseContext
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:61:9 Unresolved reference: findViewById
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:65:29 Unresolved reference: intent
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:65:51 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:67:39 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:68:18 Unresolved reference: title
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:68:50 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:71:9 Unresolved reference: findViewById
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:71:42 Variable expected
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:72:46 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:76:9 Unresolved reference: findViewById
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:80:39 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:80:102 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:89:47 Type mismatch: inferred type is ScanActivity but Activity was expected
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:92:5 'onStart' overrides nothing
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:93:15 Unresolved reference: onStart
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:97:5 'onStop' overrides nothing
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:98:15 Unresolved reference: onStop
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:102:5 'exit' overrides nothing
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:103:9 Unresolved reference: finish
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:106:5 'getCurrentDisplay' overrides nothing
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:108:18 Unresolved reference: display
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:110:18 Unresolved reference: windowManager
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:114:5 'getSurfaceView' overrides nothing
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:114:37 Unresolved reference: findViewById
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:116:5 'getPaperRect' overrides nothing
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:116:35 Unresolved reference: findViewById
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:118:5 'onActivityResult' overrides nothing
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:119:15 Unresolved reference: onActivityResult
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:123:17 Unresolved reference: setResult
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:124:17 Unresolved reference: finish
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:126:21 Unresolved reference: intent
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:126:37 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:126:75 Unresolved reference: intent
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:126:98 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:127:21 Unresolved reference: finish
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:138:21 Unresolved reference: intent
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:138:37 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:138:75 Unresolved reference: intent
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:138:98 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:139:21 Unresolved reference: finish
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:144:5 'onOptionsItemSelected' overrides nothing
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:146:13 Unresolved reference: onBackPressed
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:149:23 Unresolved reference: onOptionsItemSelected
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:155:40 Unresolved reference: contentResolver
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:168:28 Unresolved reference: contentResolver
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:173:56 Unresolved reference: contentResolver
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:192:50 Unresolved reference: contentResolver
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:203:13 Unresolved reference: setResult
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanActivity.kt:204:13 Unresolved reference: finish
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:21:33 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:23:33 Unresolved reference: SourceManager
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:24:38 Unresolved reference: CropActivity
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:25:43 Unresolved reference: Corners
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:26:43 Unresolved reference: processPicture
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:49:24 Unresolved reference: IScanView
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:170:17 Unresolved reference: it
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:176:51 Unresolved reference: it
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:190:27 Variable expected
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:191:36 Variable expected
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:251:9 Unresolved reference: SourceManager
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:251:23 Variable expected
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:251:33 Unresolved reference: processPicture
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:253:9 Unresolved reference: SourceManager
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:253:23 Variable expected
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:254:42 Unresolved reference: CropActivity
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:255:29 Unresolved reference: EdgeDetectionHandler
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:330:39 Unresolved reference: Corners
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/scan/ScanPresenter.kt:331:38 Unresolved reference: processPicture
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/view/PaperRectangle.kt:9:43 Unresolved reference: Corners
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/view/PaperRectangle.kt:10:43 Unresolved reference: TAG
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/view/PaperRectangle.kt:56:36 Unresolved reference: Corners
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/view/PaperRectangle.kt:78:15 Unresolved reference: TAG
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/view/PaperRectangle.kt:79:15 Unresolved reference: TAG
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/view/PaperRectangle.kt:80:15 Unresolved reference: TAG
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/view/PaperRectangle.kt:81:15 Unresolved reference: TAG
e: file:///Users/a97/.pub-cache/hosted/pub.dev/edge_detection-1.1.3/android/src/main/kotlin/com/sample/edgedetection/view/PaperRectangle.kt:98:33 Unresolved reference: Corners