My phone is not saving things (screenshots, download from browser, etc)

So one day my phone shutdown and when restarted I started to get some issues. Screenshot was not working saying that there was no space left. Gallery had no images/videos at all. File manager was not opening properly. I started to dig up and was able to get an stack trace:

## Issue explanation (write below this line)


## Exception
* _User Action:_ UI Error
* _Request:_ Application crash
* _Version:_ 3.5.9
* _OS:_ Linux Android 10 - 29
* _Device:_ OnePlus5
* _Model:_ ONEPLUS A5000
* _Product:_ OnePlus5

Crash log


java.lang.RuntimeException: An error occurred while executing doInBackground()
	at android.os.AsyncTask$4.done(AsyncTask.java:399)
	at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383)
	at java.util.concurrent.FutureTask.setException(FutureTask.java:252)
	at java.util.concurrent.FutureTask.run(FutureTask.java:271)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
	at java.lang.Thread.run(Thread.java:919)
Caused by: android.database.sqlite.SQLiteException: unable to open database file (code 14 SQLITE_CANTOPEN)
	at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:184)
	at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:140)
	at android.content.ContentProviderProxy.query(ContentProviderNative.java:437)
	at android.content.ContentResolver.query(ContentResolver.java:962)
	at android.content.ContentResolver.query(ContentResolver.java:890)
	at android.content.ContentResolver.query(ContentResolver.java:846)
	at com.amaze.filemanager.asynchronous.asynctasks.LoadFilesListTask.listMediaCommon(LoadFilesListTask.java:336)
	at com.amaze.filemanager.asynchronous.asynctasks.LoadFilesListTask.listVideos(LoadFilesListTask.java:324)
	at com.amaze.filemanager.asynchronous.asynctasks.LoadFilesListTask.doInBackground(LoadFilesListTask.java:165)
	at com.amaze.filemanager.asynchronous.asynctasks.LoadFilesListTask.doInBackground(LoadFilesListTask.java:68)
	at android.os.AsyncTask$3.call(AsyncTask.java:378)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	... 3 more

Could be corruption on file db? I have one app called "Files" which I can check, and I see all files there. I can take pictures/videos, record voice etc, so that doesn't seem the problem. I think the issue is related to indexation of those things, I've tried re-scan with several apps, but none worked (media re-scan, rescan sd, etc) I don't want to factory reset at the moment so I'm looking for an alternative solution (maybe a path to where is the db, so I can delete files, or an app that can help me to re-index things [if is the case], or system access to assess the issue)