Error in fetching data source in a form

@theo_pendle This is what error log saying how can resolve this error could you please tell me i am new to this AEM.

30.03.2020 12:47:47.673 *ERROR* [0:0:0:0:0:0:0:1 [1585552665658] POST /libs/fd/fdm/content/crud.dermis.formDataModelManager.json HTTP/1.1] org.apache.metamodel.jdbc.JdbcUtils Could not establish connection: Communications link failure

30.03.2020 12:47:47.675 *ERROR* [0:0:0:0:0:0:0:1 [1585552665658] POST /libs/fd/fdm/content/crud.dermis.formDataModelManager.json HTTP/1.1] org.apache.metamodel.jdbc.JdbcUtils Error code=0, SQL state=08S01

30.03.2020 12:47:47.670 *ERROR* [0:0:0:0:0:0:0:1 [1585552665658] POST /libs/fd/fdm/content/crud.dermis.formDataModelManager.json HTTP/1.1] org.apache.tomcat.jdbc.pool.ConnectionPool Unable to create initial connections of pool.

30.03.2020 12:47:31.225 *ERROR* [CM Event Dispatcher (Fire ConfigurationEvent: pid=org.apache.sling.datasource.DataSourceFactory.354c0572-e77f-444c-983c-5d8911cb836f)] org.apache.sling.datasource bundle org.apache.sling.datasource:1.0.2 (56)[org.apache.sling.datasource.DataSourceFactory(9183)] : The modified method has thrown an exception (com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

Did u get the solution?