# Form engine not initialized error **URL:** \ **Category:** Flowable Engine\ **Created:** [November 2, 2017, 9:59am UTC](https://forum.flowable.org/t/form-engine-not-initialized-error/1143 "2017-11-02T09:59:25Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![shweta](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/shweta/32/360_2.png) [@shweta](https://forum.flowable.org/u/shweta)\ **Post date:** [November 2, 2017, 9:59am UTC](https://forum.flowable.org/t/form-engine-not-initialized-error/1143/1 "2017-11-02T09:59:25Z")
Hi everyone I am facing an issue with form engine. I am trying to start a form engine , as i want to fill a form programmatically, associated with a task of a process. I use following line of code to build the form engine : FormEngine formEngine = FormEngines.getDefaultFormEngine(); But when i run the code, i am facing error that form engine is not initialized. What does this mean and how to resolve it. Could anyone help. Thanks in advance. I have pasted below the error thrown on execution : Exception in thread “main” org.flowable.engine.common.api.FlowableIllegalArgumentException: Form engine is not initialized at org.flowable.engine.impl.cmd.CompleteTaskWithFormCmd.execute(CompleteTaskWithFormCmd.java:72) at org.flowable.engine.impl.cmd.CompleteTaskWithFormCmd.execute(CompleteTaskWithFormCmd.java:38) at org.flowable.engine.impl.cmd.NeedsActiveTaskCmd.execute(NeedsActiveTaskCmd.java:58) at org.flowable.engine.impl.interceptor.CommandInvoker$1.run(CommandInvoker.java:51) at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperation(CommandInvoker.java:93) at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperations(CommandInvoker.java:72) at org.flowable.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:56) at org.flowable.engine.impl.interceptor.BpmnOverrideContextInterceptor.execute(BpmnOverrideContextInterceptor.java:25) at org.flowable.engine.common.impl.interceptor.TransactionContextInterceptor.execute(TransactionContextInterceptor.java:53) at org.flowable.engine.common.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:72) at org.flowable.engine.common.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:36) at org.flowable.engine.common.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:56) at org.flowable.engine.common.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:51) at org.flowable.engine.impl.TaskServiceImpl.completeTaskWithForm(TaskServiceImpl.java:230) at TestForm.main(TestForm.java:109) ---
**Author:** ![tijs](https://avatars.discourse-cdn.com/v4/letter/t/bc79bd/32.png) [@tijs](https://forum.flowable.org/u/tijs)\ **Post date:** [November 2, 2017, 1:46pm UTC](https://forum.flowable.org/t/form-engine-not-initialized-error/1143/2 "2017-11-02T13:46:15Z")
Hi, Because engines typically share the same database and transaction manager etc, we provide configurator classes to make this easy. There’s a FormEngineConfigurator (flowable-form-engine-configurator module) and SpringFormEngineConfigurator (flowable-form-spring-configurator module) class that do this. So you can do the following: ``` processEngineConfiguration.addConfigurator(new FormEngineConfigurator()); ``` This will boot the form engine and make sure everything is properly configured and initialised. Best regards, Tijs ---
**Author:** ![shweta](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/shweta/32/360_2.png) [@shweta](https://forum.flowable.org/u/shweta)\ **Post date:** [November 3, 2017, 5:57am UTC](https://forum.flowable.org/t/form-engine-not-initialized-error/1143/3 "2017-11-03T05:57:37Z")
Hi Tijs, I tried doing this way , but got error message: The method addConfigurator(FormEngineConfigurator) is undefined for the type ProcessEngineConfiguration I am trying to instantiate flowable engine as follows : **FormEngine formEngine = formEngineConfiguration.buildFormEngine();** and on execution , its giving following error which i am not able to understand or resolve : INFO 3/11/17 10:38 AM: liquibase: Successfully acquired change log lock INFO 3/11/17 10:38 AM: liquibase: Successfully released change log lock Exception in thread “main” org.flowable.engine.common.api.FlowableException: **Error initialising form data schema** at org.flowable.form.engine.FormEngineConfiguration.initDbSchema(FormEngineConfiguration.java:305) at org.flowable.form.engine.FormEngineConfiguration.init(FormEngineConfiguration.java:191) at org.flowable.form.engine.FormEngineConfiguration.buildFormEngine(FormEngineConfiguration.java:174) at FormTesting.main(FormTesting.java:53) Caused by: **liquibase.exception.ChangeLogParseException: Error Reading Migration File: Found 2 files that match org/flowable/form/db/liquibase/flowable-form-db-changelog.xml** at liquibase.parser.core.xml.XMLChangeLogSAXParser.parseToNode(XMLChangeLogSAXParser.java:112) at liquibase.parser.core.xml.AbstractChangeLogParser.parse(AbstractChangeLogParser.java:17) at liquibase.Liquibase.getDatabaseChangeLog(Liquibase.java:229) at liquibase.Liquibase.update(Liquibase.java:202) at liquibase.Liquibase.update(Liquibase.java:192) at liquibase.Liquibase.update(Liquibase.java:188) at liquibase.Liquibase.update(Liquibase.java:181) at org.flowable.form.engine.FormEngineConfiguration.initDbSchema(FormEngineConfiguration.java:299) … 3 more Caused by: **java.io.IOException: Found 2 files that match org/flowable/form/db/liquibase/flowable-form-db-changelog.xml** at liquibase.util.StreamUtil.singleInputStream(StreamUtil.java:205) at liquibase.parser.core.xml.XMLChangeLogSAXParser.parseToNode(XMLChangeLogSAXParser.java:93) … 10 more ---
**Author:** ![tijs](https://avatars.discourse-cdn.com/v4/letter/t/bc79bd/32.png) [@tijs](https://forum.flowable.org/u/tijs)\ **Post date:** [November 3, 2017, 7:25am UTC](https://forum.flowable.org/t/form-engine-not-initialized-error/1143/4 "2017-11-03T07:25:47Z")
Hi Shweta, Make sure that you cast the processEngineConfiguration variable to ProcessEngineConfigurationImpl. The addConfigurator is available there. Best regards, Tijs ---
**Author:** ![shweta](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/shweta/32/360_2.png) [@shweta](https://forum.flowable.org/u/shweta)\ **Post date:** [November 3, 2017, 8:30am UTC](https://forum.flowable.org/t/form-engine-not-initialized-error/1143/5 "2017-11-03T08:30:27Z")
Hi Tijs, I tried casting this way : ((ProcessEngineConfigurationImpl) processEngineConfiguration).addConfigurator(new FormEngineConfigurator()); Still throwing same error : INFO 3/11/17 10:38 AM: liquibase: Successfully acquired change log lock INFO 3/11/17 10:38 AM: liquibase: Successfully released change log lock Exception in thread “main” org.flowable.engine.common.api.FlowableException: **Error initialising form data schema** at org.flowable.form.engine.FormEngineConfiguration.initDbSchema(FormEngineConfiguration.java:305) at org.flowable.form.engine.FormEngineConfiguration.init(FormEngineConfiguration.java:191) at org.flowable.form.engine.FormEngineConfiguration.buildFormEngine(FormEngineConfiguration.java:174) at FormTesting.main(FormTesting.java:53) Caused by: **liquibase.exception.ChangeLogParseException: Error Reading Migration File: Found 2 files that match org/flowable/form/db/liquibase/flowable-form-db-changelog.xml** at liquibase.parser.core.xml.XMLChangeLogSAXParser.parseToNode(XMLChangeLogSAXParser.java:112) at liquibase.parser.core.xml.AbstractChangeLogParser.parse(AbstractChangeLogParser.java:17) at liquibase.Liquibase.getDatabaseChangeLog(Liquibase.java:229) at liquibase.Liquibase.update(Liquibase.java:202) at liquibase.Liquibase.update(Liquibase.java:192) at liquibase.Liquibase.update(Liquibase.java:188) at liquibase.Liquibase.update(Liquibase.java:181) at org.flowable.form.engine.FormEngineConfiguration.initDbSchema(FormEngineConfiguration.java:299) … 3 more Caused by: **java.io.IOException: Found 2 files that match org/flowable/form/db/liquibase/flowable-form-db-changelog.xml** at liquibase.util.StreamUtil.singleInputStream(StreamUtil.java:205) at liquibase.parser.core.xml.XMLChangeLogSAXParser.parseToNode(XMLChangeLogSAXParser.java:93) … 10 more ---
**Author:** ![tijs](https://avatars.discourse-cdn.com/v4/letter/t/bc79bd/32.png) [@tijs](https://forum.flowable.org/u/tijs)\ **Post date:** [November 3, 2017, 8:38am UTC](https://forum.flowable.org/t/form-engine-not-initialized-error/1143/6 "2017-11-03T08:38:23Z")
Hi, You have multiple org/flowable/form/db/liquibase/flowable-form-db-changelog.xml files on the classpath the error says. Maybe you can share your project, so I can try to reproduce. Best regards, Tijs ---
**Author:** ![shweta](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/shweta/32/360_2.png) [@shweta](https://forum.flowable.org/u/shweta)\ **Post date:** [November 3, 2017, 8:43am UTC](https://forum.flowable.org/t/form-engine-not-initialized-error/1143/7 "2017-11-03T08:43:38Z")
Hi Tijs, Could you provide your email id so that i could share the project with you. Thanks and regards Shweta P. ---
**Author:** ![ZeyKon](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/zeykon/32/955_2.png) [@ZeyKon](https://forum.flowable.org/u/ZeyKon)\ **Post date:** [December 6, 2018, 10:18am UTC](https://forum.flowable.org/t/form-engine-not-initialized-error/1143/8 "2018-12-06T10:18:41Z")
真的谢谢你了！我也成功解决了这个问题！哈哈哈哈哈，万分感谢！