android - Failed to read PNG signature: file does not start with PNG signature -


gradle build failing error:

error:c:\users\roman.gradle\caches\transforms-1\files-1.1\appcompat-v7-26.0.2.aar\bab547c3f1b8061ef9426f524a823a15\res\drawable-xhdpi-v4\abc_btn_switch_to_on_mtrl_00001.9.png failed read png signature: file not start png signature

error:java.lang.runtimeexception: java.lang.runtimeexception: com.android.builder.internal.aapt.aaptexception: aapt2 compile failed: error:execution failed task ':app:mergedebugresources'. error: java.lang.runtimeexception: java.lang.runtimeexception: com.android.builder.internal.aapt.aaptexception: aapt2 compile failed: aapt2 compile --legacy -o c:\dev\workspace\android2\matrixcalculator\app\build\intermediates\res\merged\debug c:\users\roman.gradle\caches\transforms-1\files-1.1\appcompat-v7-26.0.2.aar\bab547c3f1b8061ef9426f524a823a15\res\drawable-xhdpi-v4\abc_btn_switch_to_on_mtrl_00001.9.png issues: - error: c:\users\roman.gradle\caches\transforms-1\files-1.1\appcompat-v7-26.0.2.aar\bab547c3f1b8061ef9426f524a823a15\res\drawable-xhdpi-v4\abc_btn_switch_to_on_mtrl_00001.9.png failed read png signature: file not start png signature

some basic things i've tried solve issue:

  1. invalidate caches/restart
  2. deleting gradle folder

i'm not sure if it's valid solution, deleting only file mentioned in error message helped. while deleting folder, containing didn't.


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