TYPO3 Exception 1470230766

Note

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Unknown column 'a' in 'field list'

The field might not have been created yet: do a Database compare.

This error might occur if a model contains a field that does not exist in the corresponding database table. In this case you should add the field to the table in ext_tables.sql.

Table 'db.tx_myextension_domain_model_mymodel' doesn't exist

The table might not have been created yet: do a Database compare.
The TCA for the model is missing.
You intend to use a different table with your model. See Connecting the model to the database Use arbitrary database tables with an Extbase model