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25 lines
1.2 KiB
Markdown
25 lines
1.2 KiB
Markdown
# Troubleshooting Migrations
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In some cases, HedgeDoc might apply migrations without correctly saving the progress.
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In these cases, HedgeDoc will refuse to start with “already exists”-errors like
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`ERROR: type "enum_Notes_permission" already exists`.
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To fix these issues, manual intervention in the database is required:
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1. Make sure you have a way to edit the database directly. For SQLite, PostgreSQL and MariaDB/MySQL, you can use the
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respective command-line tools `sqlite3`, `psql` and `mysql`.
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2. Get the name of the failing migration and append `.js` to it.
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For example, if you encounter this error
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```
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== 20180306150303-fix-enum: migrating =======
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ERROR: type "enum_Notes_permission" already exists
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```
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the name of the failed migration would be `20180306150303-fix-enum.js`.
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3. Make sure HedgeDoc does not run and insert the name into the `SequelizeMeta` table.
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Ensure your database shell is connected to the HedgeDoc database. The SQL-statement may look like this:
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```sql
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INSERT INTO "SequelizeMeta" (name) VALUES ('20180306150303-fix-enum.js');
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```
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4. Start HedgeDoc again and observe if it starts correctly. It may be necessary to repeat this process
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and insert multiple migrations into the `SequelizeMeta` table.
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